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One of the most common problems I have found which are manifested by excess vibration in the area of tire/wheel that is not cured by rebalancing has to do with the condition of the tire. If a tire that is out-of-round is balanced, the out-of-round condition is not cured. What that means is that, while the balancing ensures that the tire/wheel assembly will not deviate abnormally from the forward/backward plane as you drive(side-to-side), there exists nothing to prevent its up-and-down movement due to its shape(oval or ellipsoid). Another common problem, potentially dangerous, is tire separation. Should a tire begin to separate, that separation may not be readily apparent without a road-test, at which time it will be noticed that the steering wheel shakes violently when certain road speeds are reached. To locate the offending tire, it is advisable to move the front tires, one at a time, to the rear of the car. In so doing, you should notice a distinct difference in the car's behavior when driven once the culprit is moved from the front. Note: If you have just had your tires replaced and the wheels balanced, there may be another explanation for the problem, assuming it did not exist prior to this: The stub-end of an old tire-valve trapped inside the tire. I have encountered this problem at various times; and, what happens is this: The tire purchase is made, and the tire man pulls your wheels off of your car. The wheel/tire assembly is put onto the tire machine, and the valve core is removed from the valve, letting the air escape so that the tire may be dismounted. The tire is then removed from the wheel. A new tire is now chosen and mounted onto the wheel. Next up is a new valve. The replacing tool is screwed onto the old valve, which is then pulled free from the wheel, out of its hole. Most of these do not come out whole. The "bottom"? Well, that falls innocently away. A new tire valve is now installed, being pulled into place with the same tool used to remove the old one. The tire is then aired-up, sealing the bead, and is moved to the balancing machine, where it is spun by computer-control and indexed for weights to be attached. This done, all is well, right? Not exactly... You see, that innocent little piece of old tire valve which fell innocently away when removed isn't actually innocent at all; but is, in reality, a nefarious little critter which has stowed away inside the new tire, now balanced--- or so it was thought... In reality, that little hunk of rubber rolled around inside the tire on the balancer just until the spin of the tire created sufficient force to make it stay in one place while the tire was spinning.... This is where it resided when the computer indexed the tire's proportional weight characteristics and where upon the rim certain weights were to be placed. Guess what: All of that changed when the tire came to rest, allowing the gremlin to fall to the bottom of the interior cavity--- and it will continue to change every time the tire moves. That is, of course, until the tire is broken back down, and the little imp is removed. Many times this situation can be detected with a good ear once the tire is jacked up and spun. If you hear something rolling around inside your tire, it's back to the tire shop. Balancing tires properly can only take place when nothing is trapped inside the tire. Another thing to consider is lug-nut torque. Over- or under-torqued lug-nuts can be dangerous, as well as a nuisance--- especially when aluminum wheels are involved. Tightening lug-nuts beyond their intended torque can warp a brake rotor, as can torquing them down unevenly or by not following the proper tightening sequence. This can result in a pulsation in the brake pedal, a shimmy in the steering wheel, possibly broken studs, and potentially the loss of a wheel while driving--- and that ain't good... And aluminum wheels: After initially mounting these and torquing them down, they require a re-torque after they are driven a short distance(20 miles or so), and a final re-torque after another 50-100 miles. This is due to the fact that the aluminum of which the wheels are made expands at a different rate when heated than does the steel to- and with which- it is bolted. If these are not properly torqued and re-torqued, the heat generated at the wheel serves to create a gap between mounting surfaces which grows--- and you end-up with lug-nuts that are only finger-tight, if that much. This is dangerous... Finally; anything which is worn in the steering or suspension can cause such a problem, as can a bad cv-joint, or a bad bearing. It wouldn't be fun to find out that a tie-rod end was bad by having it come apart while driving down the road, allowing a wheel to go whatever direction it was so inclined toward, rather than where you intended it to go through steering... A good front-end inspection goes a long way--- be safe... Hopefully, something here will be of help. Rotsa ruck.... jb

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โˆ™ 2006-03-20 23:26:27
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Q: If the tires are balanced but the car still shakes what could it be?
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Related questions

What could be the problem if your car shakes a little bit?

You have a tire out of balance. Have all 4 tires balanced and rotated. If it still shakes have the motor mounts inspected.

What is wrong with a car when it shakes?

Your tires probably just need to be balanced.

Chrysler sebring convertible shakes when driving?

Have the tires Balanced. Then check alignment. If still shakes is it when your press the brakes? If so check the rotors and abs system. Or if it could also be the over drive if it is when shifting gears. Try running it with the over drive off.

Have a 2008 dodge avenger that shakes while driving you have had the tires rotated balanced and front end realigned What else could it be?

worn out tierods

2006 Jeep Wrangler shakes at 50 to 55 mph?

Go to a tire shop and see if your tires are balanced correctly, if your tires are out of balance they could cause vibrations at highway speeds.

Your wheel shook terribly and shakes now less that the tires are balanced The car now pulls very heavy to the right Didn't before the tires were balanced Why would it be doing this?

If your tires are balanced and it's still pulling, then your car is ot of alignment. Go to a local tire shop to have an alignment done and that should rectify the problem.

Why does car shakes over 40?

could be a few reasons, check out your suspension rods, the tie rod ends, or maybe see if your tires are balanced

Why a 1994 Chevrolet Corsica shakes the car at 50 mph?

your tires may need to be balanced

Why does the vehicle shakes passing 60 mph?

Normally this is a tire out of balance. Have your tires rotated and balanced.

Why car steering shakes at low speed?

tires need to be balanced or you have a bent rim or a broken belt in your tire

What if your 2002 Hyundai accent steering wheel shakes when going over 80?

Have your tires rotated and balanced. Make sure they inspect the tires/wheels for any damage.

Rotated tires now steering wheel shakes?

Have the front wheels balanced and checked for bent rim or slipped radial belt.

Why does Jeep shakes at 90km comes out at 100km?

Possibly your wheels need to be aligned or your tires need to be balanced. REPLACE THE STEERING DAMPER

Front end shakes bad on jeep wrangler sport 1997?

you need to have the tires rotated and balanced if they are not in the best condition you probably need new tires. If your tires are fairly well and you had that done try an alignment.

Why does Ford explorer shakes when it reaches 70mph?

I would suspect a tire out of balance or a bent wheel. Have the tires balanced and rotated and inspect everything.

Lhs Chrysler 1997 shakes steering wheel at 70?

usually steering shakes over 60 mph is due to front tires needing to be balanced unless you have something more serious going on.

Jeep that has a full lift kit 35 tires you just went in got new 35 tires but when you got it back it now shakes at about 40mph the steering wheel is shaking out of your hand Why?

Are your tires balanced? I'd check that first.

Why does your cars tires vibrate?

Could be several reasons but the first one that comes to my mind is to have the tires balanced.

Do you have to get an alignment going from 14 to 16 wheels Tires already balanced and still shakes?

when ever a wheel is replaced in difference from the original the car should be re tracked up, its the same for rotating wheels from front to back

Do you have to align tires in order to balance them?

you do not have to align your vehicle to balance the tires BUT a balanced tire will still wear if the alignment is not correct

You have an 84 Cadillac Eldorado The front end shakes between 45 and 50 you just replaced both front CV axles but the problem is still there Any Idea what is causing this problem?

Have your front tires high speed balanced

What would cause a 1996 Chrysler mini van to vibrate when you accelerate above 45MPH and the steering wheel shakes?

Your tires need to be "high speed" balanced.

Why does the fuel gauge read full when it is not on a 1990 Chevy Camaro RS that starts and idles good but shakes and shimmies while driving?

Shakes and shimmies? Try getting your tires balanced and your front end aligned. That might help.

Is it dangerus to drive if car shakes after 45 mhp?

it could be, its an easy fix, you just have to balance your tires

Could off balanced tires make the ride bumpy?

Yes tires that are out of balance can definitely lead to a bumpy ride.