Telling only tire widht doesnt give you enough info about how wide wheels. ET numbers are needed too, of course. And after these you can alter the camber front and back and use even wider wheels. And still you can put undersize tires to wide rims if the rim sticks out of fender. Nuff said?
Still waiting for first correct numbers.. i have 10x18 et 40 back this summer with 255/35