Sponsored by The Tire Rack

[junhyuk8901]

Ok, I changed my tire set couple weeks ago from Stock Sizes(245-35-19, 265-35-19) PS2 to 255-35-19 275-35-19 PSS. After that, i feel vibration on my steering wheel when i drive over 65mph.

So, i went back to shop where installed my set, and asked them to rebalance the 2 times. However, i still having the same problem. They told me that they had checked my suspension, rims(if it is bent or not), balance, and everything it could caused the problem, but they cannot find anything wrong with my car... I have stock suspension, no spacers, but aftermarket rims(19 x 8.5 ET15 front 19 x 9.5 ET20 rear). Any idea?

THanks

[force4rmr]

If you had no vibration before the tire change, you probably need them road force balanced and I'd take your car to another shop !

[junhyuk8901]

Originally Posted by force4rmr

If you had no vibration before the tire change, you probably need them road force balanced and I'd take your car to another shop !

What is road force balabced?

[calintexas]

Originally Posted by junhyuk8901

What is road force balabced?

It's explained pretty well here: http://www.tirerack.com/tires/tirete....jsp?techid=40. Found using Google

Were your aftermarket wheels on the car with your old tires, or are they new too? If they are new, what brand and style are they?

[TW0929]

should be the aftermarket rims...
thats what happened to my car, checked everything, just cant find the problem.
the vibration went away as soon as i went back to stock rims.
ur tire set up will be perfectly fine on the stock rims.

[junhyuk8901]

Originally Posted by calintexas

It's explained pretty well here: http://www.tirerack.com/tires/tirete....jsp?techid=40. Found using Google

Were your aftermarket wheels on the car with your old tires, or are they new too? If they are new, what brand and style are they?

Yes, they were in my car with old tires and i didnt have any problem at all.

My rims are AluFelgen CS7.

[persian54]

Ask the shop what machine they used

It'll help out in finding what the problem may be

[junhyuk8901]

Thanks for all your replies. I fixed my car. The problem was they put some kind of "Sandbag" in my rims when they were doing "Wheel Weight". The sand(metal sand) was moving back and forth while i was driving; this was the problem. So, i changed it to metal and its all gone.

[persian54]

wait whaaat?

Any picture? I have never seen something like that before..

[e90m3_6MT]

Same happened to me, I had re11's last year and when I put on a new set this year they had this problem still not fixed all stock including the stock wheels.

[persian54]

I have a slight shimmy/vibration over 81mph on mine...I had it road force balanced using a Hunter GSP 9700, twice!

I'm thinking it may be the tires cause they are pretty beat up from track use..but it's still a PITA.

Wonder what I can do??

[KM3]

Same issue here on my stock setup - had the wheels/tires road force balanced and still get the slight vibration over 75 or so. I was thinking along the same lines as you - my PS2s have seem some abuse on the track. At this point, I'm going to ignore the issue until I put new tires on and see if it goes away then.

This car seems especially sensitive to wheel/tire imbalances...

Originally Posted by persian54

I have a slight shimmy/vibration over 81mph on mine...I had it road force balanced using a Hunter GSP 9700, twice!

I'm thinking it may be the tires cause they are pretty beat up from track use..but it's still a PITA.

Wonder what I can do??

[Shaunt_Alpine]

Originally Posted by junhyuk8901

Ok, I changed my tire set couple weeks ago from Stock Sizes(245-35-19, 265-35-19) PS2 to 255-35-19 275-35-19 PSS. After that, i feel vibration on my steering wheel when i drive over 65mph.

So, i went back to shop where installed my set, and asked them to rebalance the 2 times. However, i still having the same problem. They told me that they had checked my suspension, rims(if it is bent or not), balance, and everything it could caused the problem, but they cannot find anything wrong with my car... I have stock suspension, no spacers, but aftermarket rims(19 x 8.5 ET15 front 19 x 9.5 ET20 rear). Any idea?

THanks

Have you guys tried putting more air in your tires? I noticed that my steering wheel shakes if I put the lower recommended PSI (with 2 passengers label).

Try putting the PSI level right in between the recommended 2 passengers and 4 passengers plus luggage labels. You can find it in the back of your manual. I don't have my manual handy right now sorry can't post the numbers.

I believe I have my fronts set to 39 PSI and rears at 44 PSI.

[persian54]

Originally Posted by Shaunt_Alpine

Have you guys tried putting more air in your tires? I noticed that my steering wheel shakes if I put the lower recommended PSI (with 2 passengers label).

Try putting the PSI level right in between the recommended 2 passengers and 4 passengers plus luggage labels. You can find it in the back of your manual. I don't have my manual handy right now sorry can't post the numbers.

I believe I have my fronts set to 39 PSI and rears at 44 PSI.

Yup

I did this and it helped

I was an idiot and forgot to increase my PSI after track day.... they were at 32 cold. way too low

[jeff4598]

Really? I thought Dinan recommends 35 lbs all around. Am I wrong?

[Boxtyp3]

Did anybody checked if the after market rims are hub centered? It could cause this same vibrations too.

[blackmist222777]

i have a slight vibration at 80mph+ (sometimes) with aftermarket and OEM wheels... i can't figure it out. what else can it be? wheel baring?

[M3PO]

I have the same problem. Vibration in the front over 80 mph. I haven't had them road force balanced. I don't beat the tires up on the track. My BBS are hubcentric and straight.

From what I understand, the design of the suspension is such that it is very sensitive to imbalances in the wheel/tire assembly. For most people, road force balancing seems to cure it.

[blackmist222777]

but why would it sometimes be ok... meaning i don't feel any abnormal vibration, and other times its totally there...?

[datninja]

I had this problem on mine for over a year. I had my front left changed (they said it was bent) still had vibrations. Road force balanced at multiple locations, still not fixed.Then I got a set of HRE's and a road force balance and it's butter smooth now!

[Moxie]

Had a vibration with the Volks that started around 80MPH. Took off the front wheels & put the Advans on with no vibration. Stripped the weights off the Volks & took them in to have them rebalanced. Problem fixed.

If there are a lot of weights on a wheel, suggest to them they rotate the tire & rebalance. If you describe the problem, they should be smart enough to fix it.