Joe has it right. 15's would work if you could find a low enough profile tire with enough grip.But problem with that is a 15 with that low of a profile would only be like 22" tall,and look really weird,hahaha. I think the 17 is your best bet maybe 18.That way you get a low profile tire and still have it be 25.5"-26 tall tire,and it willl look proportional.
