5mm is a lot of difference when choosing tyres for guard clearance.
i used to own a set of cst's, dont have the pics on this comp if i remember when im on the other comp ill post em, they were 17x9.5 +15 and i ran federal SS595 215/45 all round, the rears fit with the lip rolled, the fronts were a little mexican definately needed a roll/flare or try 215/40 and a little camber.