Hey all. I have tires on my s that have slightly different use and they are about a 1/4" different in diameter. This is causing the car to pull to the left under acceleration and to the right under deceleration. Is there a way to accelerate the wear or reduce the diameter of the larger tire?

 

Most good tires shops should be able to shave the new tire down to match the old one.

 

If you've eliminated alignment as the cause, you may be able to stagger the air pressure to even out the handling since you're only 1/4" different on a 25" tall tire. Just keep both tires above 30-32# and you should be OK.

What say ye Jim @ Tire Rack?

 

I went ahead and swapped rear tires left to right and the issue reversed itself which confirms its the tire size difference causing this. I'll try playing with tire pressures.

 

It's not the diameter difference, unless the tires are different sizes. 1% difference in diameter (.25"/25") wouldn't give you any problems.
Have you checked the pressures? If not, do so! Low pressure in one rear tire will give exactly the behavior you describe.
If it's not pressure, it's more likely to be a bad tire, imo.

In any case, don't shave down the newer tire to match the worn one!

 

http://www.tirerack.com/tires/tirete....jsp?techid=12

This is a good link. It list a few things that can cause an issue. It is too difficult to say for sure. We do shave tires down to match the tread depth of the other tires. Mostly do that for 4wd cars.

 

Easy, just release some air out of one of the tires. Hahaha.. Jokes, I honestly was questioning how to do this myself.

 

Zdan, good call here. I'm typically really good about tire pressures so didn't even think of that. They was a 10 psi difference in rear tire pressure. Once that was equalized everything felt fine. Not sure why I didn't catch that myself. Dohhhhhhh