I need some help with wheel sizing on an EG civic. What would be the widest wheel/offset combination I could fit with 15 or 16 inch wheels? I don't want to to any modifications more than rolling the fenders.

The car will be used for circuit racing and autocross, so I need to be able to steer fully with no rubbing, unless it's very minor.

I searched without luck, but if anyone can point me in the right direction, it would be great.

 

First decide what diameter you want.

Then decide what kind of tires you want (make and model and size).

Then look up what rim widths are approved for that tire model and size.

If it were my '92-95 Civic, I would get 15x7 wheels with Falken Azenis RT-615 in 205/50-15, or 16x7 with the RT-615 in 205/40-16. And with the proper offsets, I wouldn't even need to roll the fenders at all.

 

The wheels will be 15 or 16 inch like I already said. The tire size depends on how wide the wheels will be. But as you said if you get 16x7 with the right offsets, I won't need to roll the fenders, but with a roll, you can fit another inch or so with some camber.