hey guys my 09 gt has a lot of wheel shaking going on. i brought it to the dealership they checked everything out and said eerything was good including the balancing but noticed the tires were choppy on the corners( getting turn up ) do you think the tires could cause that much shaking (its kinda bad) or do you think the rims and tire combo has a problem which is not visible to the eye.. theyre not bent .. theyre the 18 inch oem fanblades with pirelli p zero nero tires

 

Find a shop that has a RoadForce balancer. It will detect wheel and tire defects that spin balancers will only throw weight at. If they pass the Road Force, then you need to start looking at suspension. My bet is the RoadForce will find your problem.

I had a tire with a bad belt that passed spin balancers but was caught immediatley by RoadForce. Darn car was practically bouncing down the road.

 

If you are under warranty make the dealership fix it. Them saying they can't find it just doesn't cut it. If it needs a roadforce balance then they need to figure that out and pay for it. Good luck.

 

Tire balancing isn't covered under warranty, it's maintenance. Anyway, chopped edges would mean a toe issue but, even after an alignment the shaking will be there due to the tire wear. Did you try rotating tires? If the it is a tire issue it stop/change the shaking.

 

+1 on the RoadForce Balancer.

 

My point is the dealer checked "everything", said they couldn't find the issue and gave up. They checked balance and said that wasn't the problem. It's time to make them honor the warranty and find the problem imo.

 

I'd have to suspect a belt in one of the tires

 

Could be. I've had two belt seperations. It was quite some time ago. The first one was prorated and replaced. The second one took awhile to find. Tire shops "threw weight at it" like Nuke posted. Finally I narrowed it down to one wheel/tire by spending a good part of a weekend driving around and rotating tires with the spare. Went to a hole in the wall used tire shop and asked the guy to balance it. He put it on his old crappy looking balancer and told me there is no way to balance this tire because the tread is internally seperated. He had me stand behind the tire while it slowly rotated and I could see it when he pointed out the wavy spots. The two brands were General and Mohawk. I'll never run crappy tires again.

 

well the shaking seemed to stop after i put my original 17 bullits on.. any body ever have problems with these pirellis? and besides the road force balancer is there another way to tell if the tires are bad?

 

It's almost impossible to "see" a defective tire. Belt problems can often be invisible to the naked and even trained eye. The RoadForce balancer puts weight on the tire (hence the "Force") while it spins. A defective belt (or other defect of the tire and rim) becomes apparent as a change in force that the tire exerts on the "ground".

I'd rule out the wheel/tires first but since you said the problem went away with your 17" Bullitts, then call around and find a shop that has a RoadForce balancer. I don't think you'll figure this one out any other way without spending a lot more money than the RoadForce balance.