Front End Vibration At 40 Mph

Jul 28, 2013 · Strange vibe coming from front end ? Maybe this is why. 5 EB, HR - my van has a vibration and humming noise that we can not seem to locate. At around 60-65 MPH the front tires seemed to have vibration almost like out of balance. I have just replaced the tires and the problem was there with the old tires. The front end gives a bit left to right but i. I dropped them down to about warm 46 front and 40 back. At about 35 - 40 mph and 1,500 to 2,000 rpms--under a slight load, there is an intermittent loud rumble from the rear (right, I think). So they found one tire slightly out of balance and rotated it to the front. I have also replaced the rear U-Joint on the front drive shaft (there was some play in it, all others felt solid), but I still have the vibration, my mechanic suggested i balance the rear drive shaft. I did purchase the extended warranty because the "as is" concerned me, but did not plan on using warranty the second day after purchase. Car "shudders" between 35 mph & 40 mph My '93 325i has been "shuddering" (the entire car seems to shake) when I am between the speeds of 35-40 mph. This only happens in this speed range. No clunking and no other stange noises at any time. My 1996 Jetta GL 2. I got the tires balanced and wheels aligned. I have recently replaced - Chevrolet 2004 Venture Passanger question. RE: 45 mph vibration IP: Logged Message: Check your transmission fluid level. You would feel it through the steering column and pedals as time went on the vibration would get more noticeable. When I accelerate at or above 40 mph the entire vehicle vibrates, and when I let off the gas the vibration stops. Sometimes the vibration goes completely away and braking is silky smooth. The front end shakes alot at 40 plus MPH I jacked up the control arms and shook the tire side to side and top to bottom. no lift on truck. I can do the work but not good at diagnosing. 32 Ford Roadster, tube front axle with 4 link, 9" ford rear with coilovers. I'm yet to drop the prop out. I can feel it on the steering wheel as well. Vibration still there!. That was my 15, the 18 is smooth as glass. As I drive faster, it straightens out. It runs and handles fine before and after those speeds are reached. I have made many repairs to the front end and at some point I started noticeing that right at 40 mph it feels like a vibration/hop in my steering wheel and the front end. When I accelerate the car and in between 35-40 MPH, there is slight vibration and metallic grinding noise from right front side. interestingly enough, at one point after taking a break, i'd started the car and before. below 45 mph - out of round, 45 to 55mph toe, over 55mph balance( drum and hubs included. I have a vibration throughout my car when accelerating on the highway between about 40-60 mph. The tech said, sure 'nuf, it's out, and rebalanced. Also seems to make a low rumble 'nosie' on the front driver side when giving it gas at the time of vibration, but I could be hearing things. You replaced a RH axle and maybe it is too short creating some excessive runout on accel. At 40mph I can start to feel a light vibration in the wheel and through my feet. i still have a bad frontend shake that can be felt tru steering wheel. Motor mounts relatively new (had vibration problem related to ECO and bad motor mounts). Just got new tires front end alignment, that did not fix vibration. Speeding/dropping a gear had little to no effect. I get a vibration between 30-40 mph but only when accelerating, when I let off gas, the vibration is gone. This shaking does not occur at 20 mph or 40 mph. Nov 28, 2019 · I am fighting this vibration from the front of our SSEi, I replaced the rack-n-pinion, both outer tie rod ends, brake rotors, tires-tried multiple types and brands, trans and engine mounts, front struts, front upper mounts with bearing plates and tried differant alignment angles. If I let up on the gas, it stops. mine's in the front and it happens to be a slightly binding u-joint. Started to notice a front end vibration that comes and goes,most noticeable at hwy speeds. I just took off my 20" rims and put my stock rims back on for the winter but now I have a humming from the front end that starts at about 15mph and increases loudness to 40mph. Accelerate to the 40-50 mph range, just normal acceleration. I begins to appear at about 70mph and get worse as I approach 75mph. Had a vibration "shack" over 40 MPH block up all 4 wheels up about 55 to 60 the two of the rear duals where going up and down like an inch changed wheels and tires fixed one not the other changed the second time and still had a problem took a Hub pilot rim back to ave balance checked and it was the rim When on the balance machine no tire the. When it does I can stop it immediately by lightly tapping the brake pedal. These were on it when I bought it. Below is what I have done so far:. Dec 29, 2016 · Almost always vibration at speed coupled with steering wheel vibration is wheel/tire caused (out of round tire, wobble, balance, flat spots, faulty tires - some end up with "heavy" spots, damaged wheel, etc. Motor mounts relatively new (had vibration problem related to ECO and bad motor mounts). Jul 26, 2013 · Front end vibration at 25 to 35 mph Getting a vibration between 25 to 35 mph only otherwise no vibrations, had - Suzuki 2007 SX4 question. My '04 Saturn Vue (5spd Manual) has a front end vibration/shutter problem at over 55mph on the highway. I'd start by putting the car up on jackstands and giving all the suspension bits a good tug to make sure they aren't loose. I have a really weird vibration/shutter at about 50 MPH. Before replacing the rotors I checked them with a dial indicator and they seemed fine but I went ahead anyway and replaced them. Dec 10, 2009 · Im having about the same problem too. I've swapped the wheels from back to front on both sides with no effect. Just 30 mph +/- 5 mph. - The Rookie : Thanks for your reply. Looking for some advice - I have a 2005 4runner (115,000 mile), just had the pinion bearing replaced in the rear differential. Here are the causes as I see them: Out of balance tires- only a year old ,already balanced twice, still could be a balance problem. In an attempt to find the source of the problem, I had my tires rotated and balanced. 5 to 2 to 1. *Check the alignment of front end!*I am the 2nd owner of a 99 F 53 chassis. Prior owner has put on new shocks,some suspension items, new front prop shaft. It only happens between 65 to 70 mph but it is a fairly bad vibration. Steering wheel shake normally indicates a problem with the front end while a shake felt in your feet and/or the seat will be in the rear. If it is fine, check your front and rear-ends for proper lubrication. Apr 27, 2013 · Brand: Chevy Avalanche rattled by vibration at highway speeds a vibration starts and by 65 mph feels and sounds exactly like driving over a rumble strip. If not then it's. Sometimes the problem is worn shocks or a loose part in the suspension or steering linkage. Heavy vibration at speeds about 50 mph. 7 fluid damper, all to no avail. One was off enough to cause the wheel to shudder. This is a 1983 SC Targa with only 39,000 miles on the. Does the front end of the car shake, or is it the steering wheel? Vibration in the steering that occurs at certain speeds, but is not noticeable at other speeds is usually a problem with wheel alignment. Oct 14, 2010 · About 3 days ago it started doing this thing where once we hit somewhere between 30-40 mph, it started making a low pitch humming sound. If I accelerate gently (stay quite under 2. I didn't have the cash to fix it, so I put my full sized spare in its place. I have not replaced or turned my rotors yet. Front end bounce. Along with the above, and prior to noticing vibration, I got new Michelins along with a front end alignment. Jul 22, 2016 · When I am driving and get to 40 mph, my car starts shaking. Update on my 40+mph vibration to help others I've used this site countless times as reference, so hopefully this is helpful to others. 1 do you get a vibration during acceleration at 40 mph and above ? or 2 do you get this vibration while coasting at around 40 mph ? or 3 do you only get this vibration under breaking from 40 mph ? which one of these describes the problem area the best because each one of these questions will point you to a different answer. I had the wheels re-balanced and checked the ball joints. Excessive lateral runout will also cause front-end shimmy. Abnormal tire wear causes small vibration in the 30 - 55 mph (88 km/h) range. Vibration still there!. A Road Force Balance, although a great tool, is not likely to be necessary on Symmetry tires. They were not there when I first owned it. It's not the death wobble. Car is only vibrating at 40-45 mph. Second owner. So, is this just something wrong with my tires or is there a more serious issue?. 40 mph and leaves around 48 mph. The whine will change to a growl noise when the. Ask Question 80 and I give it gas the whole front end will shake like a tires about to blow. It does it fairly regularly at those speeds and usually when I start to give it some gas after slowing down a bit. I'm trying to determine where its coming from now. The vibration was very much in the seat and the Ford dealer , after checking u joints and "other issues" moved the tires from the rear to the front and the vibration went to the wheel more so. About 2 weeks ago front end vibration started. I'd start by putting the car up on jackstands and giving all the suspension bits a good tug to make sure they aren't loose. the truck is an 2000 chevrolet 1500 Silverado Z71 with 197,000 miles. The vibration or shudder in your vehicle comes and goes during mild to mid acceleration. If I let up on the gas, it stops. Dec 29, 2016 · Almost always vibration at speed coupled with steering wheel vibration is wheel/tire caused (out of round tire, wobble, balance, flat spots, faulty tires - some end up with "heavy" spots, damaged wheel, etc. Get off gas and coast any speed and its perfectly smooth. what should i. Especially on a downward slope. After driving to NY skiing last weekend, the noise doubled and I could not drive faster than 40 mph due to the vibration. it has 31000 miles and has just started to vibrate at 30-40 mph taperes of alittle after 40mph and comes back greater 50-60 mph. My 2006 rav 4 cylinder has recently starting making a loud noise/vibration. Front end vibration at 25 to 35 mph Getting a vibration between 25 to 35 mph only otherwise no vibrations, had - Suzuki 2007 SX4 question. It's not always consistent in how it vibrates either. That was my 15, the 18 is smooth as glass. Purchased 2006 300C with 80,000 miles a while back and the car had a slight body shake at 40 MPH which was absent above and below. Any ideas what to check?. She works 2 mi away and had not been on the freeway/expressway in several weeks, so it took a freeway drive to discover the front end vibration issues. I have not replaced or turned my rotors yet. My 1996 Jetta GL 2. This is a discussion on Front end vibration at 40+ mph, or when AWD is engaged within the ACE Engine and Drivetrain forums, part of the Polaris ACE Garage category; I have noticed something that disturbs me a bit, and I want to describe it, and see if anyone else is experiencing the same thing. Car shakes at 55 mph. Rear end vibration at 42mph There are many threads about the vibrations at 40-45 mph but noone has posted any answers. 73 rear and 245/40//18 tires. Took them to my local shop and had them rebalanced. I let some air out of the tires thinking that maybe that would help me determine if it's the tires. It seems to occur at random and feels like you are driving over a very closely spaced short height speed bumps. A rule of thumb is if you feel the vibration in the seat it. My truck has a violent shake in the front end at around 45 mph. My 2008 lexus 350 starting vibrating at speeds from 40-60 mph. Only the next incline it starts to shake like it's gonna fall apart. I have a really weird vibration/shutter at about 50 MPH. My tires were rotated front to back and it still vibrates like heck on what feels like the rear right wheel at 40-45 mph. download peterbilt vibration problems free and unlimited. it has 31000 miles and has just started to vibrate at 30-40 mph taperes of alittle after 40mph and comes back greater 50-60 mph. Below 45, no vibration smooth as silk. I was driving my wife's EB Flex and noticed that at about 78 mph there is a strange high speed vibrating noise that seems to be coming from the front end. If I apply very slight amount of gas, the vibration goes away. 6 i recently got caught in a high rainy windy storm and on my home a small tree branch fell in front of me i wasnt going fast but couldnt stop and the branch went through my air cooler and into my radiator i bought a new radiator off of ebay and when it came it was. I had death wobble badly and retorqued all bolts and got my tires balanced. how to diagnose a shaking steering wheel - yourmechanic. Vibration present while moving in D and N. OK, so im at my wits ends trying to find this damn vibration. I took it back to the dealership,left the car with them for the day. / I have a vibration in the front end when I. Speeding/dropping a gear had little to no effect. Bob Ingman. Never in a neighborhood and never on the highway. The spare was 10 mm wider than the other front tire, buy I didn't think much of it. The noise seems to come from the front driver side. Most tire/wheel imbalance problems will make themselves evident at speeds above 45 to 50 mph. It only happens between 65 to 70 mph but it is a fairly bad vibration. It only lasts a few seconds if I keep accelerating. I let some air out of the tires thinking that maybe that would help me determine if it's the tires. have not alleviated the 60-70 mph Volvo vibrations. Shortly after I hit the highway and began noticing a strong vibration from the front end over 60 mph. 2010 Honda Odessey began strong side to side vibration only when accelerating. It's not real bad, but it is present when I am coming to a stop from about 20 MPH on down to 5 or less. Coasting in neutral 40 mph, turn off engine, brake to a stop--same result. As I am a stickler for correct new engine break in, I have not taken it past 50 mph to this point, and do not want to until the vibration issue is solved. Yep that 55 to 70 mph vibration. I am not sure what it could be? Suspension is not my thing. $570 and half a day. He rechecked the balancing job that I initially had Les Schwab do here locally and they had in fact rebalanced the front wheels properly. The inside rearview mirror becomes hazy with the vibrations. RX350, 2007. But the vibration is horrible and sometimes shakes the dash, but doesn't feel like it's in the steering. This might happen once or twice a month. If not then it's. I have a vibration that I can't seem to figure out, I have replaced all 4 tires and balanced the wheels and got an alignment done. I am beginning to get very annoyed with this. It can be heard louder when I'm cruising @ 45-50 mph. Steering wheel/front end shake at 60+ mph. I had a vibration in my front end every time I was in the 40-48mph range. At about 60-65 it sort of goes away, but not completely. the second possibility is that the jake. I know it's not fuel filter for sure b/c I've heard how that's like and it's not close to what I'm hearing. Jan 18, 2018 · Truck has had numerous front end work recently including new tires, end links, ball joints, and the driveshaft center support bearing. I am having a vibration problem with my 2001 F-150 Supercrew 4X4 w/ 4. I could put the trans in neutral while sitting still and rev it and got the same vibration. Vibration, but no steering wheel shake is often driveline. It always comes in right around 50 mph though. Front end vibration driving me nuts ! I've had these vibrations going 40-45 mph in 4th gear going 2250 rpms for about 4 months, they stopped about a week ago when. The vibrations were in the front part of the car and were intermittent. Bad Sway Bar Cause Vibration. wih 106,000 has the same issue. I noticed this vibration. Next is the trans fluid and filter kit. I say that only because the driver's outside mirror vibrates at that speed too, where the passenger side. Took them to my local shop and had them rebalanced. So I'm wondering if the vss. *Check the alignment of front end!*I am the 2nd owner of a 99 F 53 chassis. As the vibration gets worse the whole cab can shake but it will start in the steering wheel. Sep 13, 2013 · I’ve got a slight vibration coming from the powertrain (felt in the pedals and seat, not just steering wheel) of my 2012 Durango Citadel Hemi between 50 and 70 mph. My 2014 F-350 Dually two wheel drive has developed a body vibration as the truck hits 60 mph and increases as the speed goes up, but if speed is held even the vibration will come and go. Anyone have similar story?. I've got a slight vibration coming from the powertrain (felt in the pedals and seat, not just steering wheel) of my 2012 Durango Citadel Hemi between 50 and 70 mph. March 26th, 2015 at 7:40 am. I'd start by putting the car up on jackstands and giving all the suspension bits a good tug to make sure they aren't loose. 5K rpm) the car won't likely develop the vibration. Especially on a downward slope. I have a shaking/vibration problem, but it seems to be in the front end not the rear. Both Aashish and Brian are on the right track maybe I can help a little as well. Dec 15, 2009 · My 2005 Ford Explorer XLT AdvanceTrac suddenly developed a front-end vibration problem that is at its worst at about 70 mph, less so at 3-4 mph faster or slower than 70. HONDA VTX1300 Comments and Complaints ID:14451 - Vehicle Safety Comments and Complaints Information for HONDA VTX1300 approx 40-45 mph the front end wobbles. Had new ball joints put in, new tie rod, tires rotated, wheels balanced. The front end on mine is tight, it's not a steering wheel vibration, it's in the driveline somewhere. Fresh rear tire. The dealership has ruled out front end, wheels, tires, rotors, and drive shaft/line They are asking Ford engineering for help. I did not pursue it past one visit to the dealer as it was not bad and only at high speeds. As I drive faster, it straightens out. on the pinion get the majority of the wear while each end of the rack. Usually comes from the front of the car and can be felt all over usually. So they found one tire slightly out of balance and rotated it to the front. My first thought was a front tire out of balance. This might happen once or twice a month. Well, I finally located somebody to take a hard look at my vibration Friday (Craigslist is your friend). Is there a vibration in the steering wheel or the seat? The answer can usually give us an idea of whether the vibration is coming from the front end, which will generally transmit vibration directly to the steering wheel, or from the back end, which will transmit vibration through the frame of the car and into the seat. Definitely in the front end, not seat of the pants. You replaced a RH axle and maybe it is too short creating some excessive runout on accel. Diagnosing And Repairing Wheel Vibration. I know, that's weird but it does. Anyone have similar story?. Now, 100,000 miles later i have the same problem. It sounds like it is coming from the center of the vehicle. If I apply very slight amount of gas, the vibration goes away. lubegard® synthetic automatic transmission fluid protectant can be added to any atf (except ford type f or cvt fluid. I'm wanting to say it's in the transmission or driveshaft, or rear end. Vibration In Front End. the fast lane truck 308,698 views. I have a concern about a front end rumbling and was looking for some suggestions on possible places to start looking. New tires new brakes new rotor in the last year. I let some air out of the tires thinking that maybe that would help me determine if it's the tires. Vibration, but no steering wheel shake is often driveline. The UJs HAVE to be ‘in phase’ otherwise vibration and other issues can occur. The vibration come through the steering wheel,sometimes you can feel it in the floor. Front end bounce. Grenaded the transfercase, transmission, front driveshaft, rear driveshaft, wiped out the fuel lines, fuel pump, and wiring harness. The car has big amplitude vibration at speed 25~35 mph. It goes away if I solw down or speed up out of that range. His example, the vibration experience of a few others here, and my situation, is very concerning. There is no shaking, though sometimes I can almost feel the vibration from the humming at my feet. I once had a chevy impala that had a steering wheel vibration over 30 mph on up that vibrated the wheel back and forth and had the tires balanced in front. admits their is a vibration (which is very noticeable) but cannot figure it out. It only happens between 65 to 70 mph but it is a fairly bad vibration. I planned on taking it back and getting the tires re-balanced, but due to the wife, I ended up at Home Depot first. Well I developed a vibration starts at 30MPH to around 40 MPH. The noise seems to come from the front driver side. 1 do you get a vibration during acceleration at 40 mph and above ? or 2 do you get this vibration while coasting at around 40 mph ? or 3 do you only get this vibration under breaking from 40 mph ? which one of these describes the problem area the best because each one of these questions will point you to a different answer. i have had severial motors put in and out of the car,rebuilt the transmition,rebuilt the front end,rebuilt the steering all the way through. Violent Shake/Vibration in front end at 40-50 mph. This is a discussion on Front end vibration at 40+ mph, or when AWD is engaged within the ACE Engine and Drivetrain forums, part of the Polaris ACE Garage category; I have noticed something that disturbs me a bit, and I want to describe it, and see if anyone else is experiencing the same thing. It's not real bad, but it is present when I am coming to a stop from about 20 MPH on down to 5 or less. If I accelerate gently (stay quite under 2. Dec 29, 2016 · A couple of us had minor, tolerable issues with high speed vibration (mine was above 80) and it was the tires. It happens above 55 mph, is most noticeable at 65, and is less but not absent at 70 mph. Thanks Sean Boburk , I was told excactly the same thing at the Ford dealer, shake in the wheel =front end , shake in the seat=rear end. I've heard of higher mileage BMWs getting vibration through the seats from the prop shaft. I have recently began to feel a vibration in the steering wheel. Prior owner has put on new shocks,some suspension items, new front prop shaft. I am not sure what it could be? Suspension is not my thing. I can do the work but not good at diagnosing. The whine will change to a growl noise when the. It runs and handles fine before and after those speeds are reached. How about the new wheel, any change? We have to know what the results are of each item you have replaced or. Unfortunately the drive shafts are on back. A mechanic once told me their rule of thumb for front end vibration was: Begins around. front end wobble only at slow speeds - bimmerforums. - The Rookie : Thanks for your reply. Nov 28, 2019 · I am fighting this vibration from the front of our SSEi, I replaced the rack-n-pinion, both outer tie rod ends, brake rotors, tires-tried multiple types and brands, trans and engine mounts, front struts, front upper mounts with bearing plates and tried differant alignment angles. Just got new tires front end alignment, that did not fix vibration. Nov 17, 2013 · I got the car back yesterday and it's still a vibration. I believe the 90s have a ‘double cardan’ Joint on the rear prop but not on the front. It does it fairly regularly at those speeds and usually when I start to give it some gas after slowing down a bit. Occurs at a speed around 30 mph and then quits until you get above 45 where is seems to continue at any. When I am driving from 0mph up to 40 or 42mph my steering wheel shakes, when I turn right driving at any speed up to 40 mph it makes a clicking noise all of these problems sound and appear to be on the left front general wheel area of my Pt Cruiser I have aired the tires up and checked the pressure still doesnt work. Vibration in front end. My 05 with 105,500 miles on it has just started with a very strange transient vibration in the front end. Anyone have similar story?. So I have everything back together (minus front drive shaft) but I am having a vibration in the seat that starts once I hit 40-45 mph and I cannot diagnose. my f250 has a vibration between 40 and 60 mph, let off the gas and it stops aplly the gas and its back, I put new universals in drive shaft, didn't fix it all new front end work, don't know where to turn to. below 45 mph - out of round, 45 to 55mph toe, over 55mph balance( drum and hubs included. Need to check again Tie rod , rod ends, and rack-- all changed last year. I just bought a 2002 Jeep Liberty Limited as a cheap "drive to work" vehicle. 73 rear and 245/40//18 tires. To me it sounds like an airplane, I don't know how else to explain it. Ok under 40 mph. At high speeds it's not really noticeable, just feels as though at times the roads are rough from truck traffic. Ive rebalanced all the tires, had them rotated, even did it myself with no help. I have always been told, that most front end vibration is due to improper wheel balancing or unequal tire pressure. It goes away if I solw down or speed up out of that range. This will produce a whine noise at high speed. Once I get over 60, everything smooths out very nicely. For a few months now I have had vibration that sounds more or less like a bad wheel bearing at speeds around 70-75 MPH. it has 31000 miles and has just started to vibrate at 30-40 mph taperes of alittle after 40mph and comes back greater 50-60 mph. Freightliner - serious front-end vibration Discussion in ' Rule of thumb. Now I'm gettign a humming sound from the front end at speeds between 60 & 70 MPH. 40-45 mph, there is a vibration coming from transmission, and a sensation that the tires are rubbing against somethingbut the tires are not rubbing against anything. Hi i have an 07 cts with a 3. Front end noise - growl at 30 and 45+ mph. 9 Noticeable vibration at 40-50 mph on flat, non-bumpy highway. Front end vibration/shutter at over 55 mph. I have also replaced the rear U-Joint on the front drive shaft (there was some play in it, all others felt solid), but I still have the vibration, my mechanic suggested i balance the rear drive shaft. Didn't matter if it was 4Hi 4Low or normal 2 wheel it always vibrated. The first time. - posted in Tech Talk: As the title states, my jeep vibrates between 40-50 mph. 2002 IMPALA Front End Vibration, starts at 35 mph up to 45mph. Fresh rear tire. I have not replaced or turned my rotors yet. Smooths out around 50 mph. I had my front control arm bushings changed on my 97 E320 (40k mi) at the dealer and the vibration is still there. The whole car is vibrating at high speed (>70 mph). I'm trying to determine where its coming from now. When I got my 1995 Dakota 4x4 CC, the front-end was a little low (not much, just a tad) and because of this, if I drove at 55 or above and warmed it up, then turned at below 10mph, it would grind. Bob Ingman. I was told that one of the rear wheels was bent so I replaced it. The road noise has gotten louder and the vibration is present whether I am on the gas or just cruising. Front end vibration at 40+ mph, or when AWD is engaged. I have a vibration that is driving me crazy at 25 and 60 mph that seems to go away at other speeds. We have replaced the spark plugs, all wires, tires are new and have just been balanced. My car has been experiencing a front end vibration when I reach 65-70 mph. i have a vibration at 40 mph that i just can't find the cause of. The front end on mine is tight, it's not a steering wheel vibration, it's in the driveline somewhere. This might happen once or twice a month. 2004 4runner, 80k miles. I drove it at 40 MPH with brakes applied: Still vibration. The truck has a vibration at 30-40 mph. The tech said, sure 'nuf, it's out, and rebalanced. #1 rumbling vibration when letting off the gas pedal at come on until 40 minutes after that happened. However, I never feel anything remotely close to a wobble or even vibration when I even have a single finger on the handlebars, and it seems to be happening only at a specific range of speeds (sometimes it also happens in the 35-40 mph range, yet sometimes there's no wobble, even in either of the two speed ranges. Well I developed a vibration starts at 30MPH to around 40 MPH. As soon as the car hit 40 MPH, the whole front end of the car (including the steering wheel) shook like crazy as I drove to work - I felt like the car was going to shake into pieces. the truck is an 2000 chevrolet 1500 Silverado Z71 with 197,000 miles. Ford F-150 Suspension problems. Front end vibration at 40+ mph, or when AWD is engaged. 73 and the tires are 255/70R16. He was in the middle of examining the rear suspension and how the vibration is normal when I asked how come it does not do this in 4th gear; he went quiet. It stops when I let off off of the accelerator. a widespread flaw in the vehicle you are about to pay 40 grand for. At 40-50 MPH the shake is so bad that the steering column vibrates noticeably. sorry you had to get a new set of tires for nothing. Vibrations really 'kick in' when giving gas, and they level off at about 50mph. For example, going up a hill in 6th gear, adding throttle will amplify the vibration. When I reach over 40mph (probably more like 42 mph)the vibration is gone.