Tyre size for r33

[croat]

Ok i just went today to get my new 17inch 255/45 tyres fitted to my r34gtt rims, on my r33 gtst. i originally had 235/45 17 inch but decided to go bigger for more traction... The guy at the tyre place said that these are 2 big for the guards and i need to get them rolled... he says that the 255's will give me less traction than the 235's cause they will dement and go out of shape when on the roll? What should i do, are the 255's really to big for my r33 or should i go and get 255/40 profile to narrow them down a little?

[Duncan]

Sounds like you need to find a new tyre shop. If you have high enough tyre pressures a 255 will always have more grip than a 235 of the same tyre.

With the correct offset in the wheels, people have fitted up to 275s. I had 265s on mine but did need to get the guards rolled. Also, its unlikely he can tell for sure that the tyres are too big unless he has actually fit them.

[Blade]

correct me if im wrong...i use to have gt-t rims and their dimensions are 17 x 7.5 wide

You can go higher then 235's however it is not recommended as the width is too small

U need to buy a wider rim to take 255's.

[Pandaemonaeon]

I can't really go any wider that 235 on the front, but it probably wouldn't be an issue if my car wasn't so low. I ran 255's on the rear wthout any trouble at all and will soon be going to a 275, which will probably require a bit of guard rolling. You really shouldn't try to go to a 255 on the GT-T rims though as they are not wide enough as blade stated.