I just recently swapped wheels and tires from 215/65/15 to 255/60/16. Before the swap the car handled fine. Now, the car will pull, mostly to the right, but sometimes to the left. Or sometimes not at all.

Any ideas?

 

Check your tire pressure
or maybe it is the road you are on

 

Tire pressure is good.

 

I had a T/A with 15" wheels and then went to my Formula with 16" wheels. The formula can be down right scary with how it loves to follow the road. The wider wheels seem to do this. Your alignment could be slightly off. With the new wheels it could be more noticable now... that would be my guess.

 

tire pressure is a good bet also check the toe and caster angles. Even though does not have a lot of caster adjustments it may lead you to other problems in you suspension.

 

Yeah I heard wider tires can do that. The tires are used, so I may put some 225 up front. Those will fit on a stock 91 Z28 wheel, right?

 

you may have gotten a bad tire also, i work at Goodyear and we see that quite often. Go back to where u bought the tires (or had them installed) and tell them you're having a problem.

 

Problem there is I bought the tires and wheels used from someone on this site.

 

If the car is lowered you are experiencing bumpsteer (improper tierod geometry). Bumpsteer causes a toe-in affect and the tires will fight each other based on which one is making better contact with the road that instant. If car is not lowered then its alignment toe setting. Performance tires will enhance either of these because of better road grip and less forgiving sidewall on tire.

 

Car isn't lowered. I guess I'll try the simplist thing first and get an alignment.

 

My 89 GTA did the same thing.Last month I did my suspension(springs,shocks,struts and ball joints)and it's not nearly as bad.