Wheels: BBS RS-GT forged 2 piece wheels
Front: 18x8 et35
Spacer: none
Rear: 18x9 et45
Spacer: none
Tires:
Front: Bridgestone RE55s R-compound 225/40R18
Rear: Bridgestone RE55s R-compound 225/40R18
Suspension/Fender Mods/Camber:
KW Clubsport lowered but can't remember how much/ No fender mods/ Negative 2.8 at the front and negative 2.4 at the rear. Rear camber was adjusted using factory adjustments available for the car. Front camber is achieved through KW's racing mount which is part of KW Clubsport coilovers.
Notes:
We started the exercise by putting a 265/35R18 on the rear, but these don't even come close to fitting. Then we put on 245/40R18, but they just rub slightly. Bear in mind this is a R-compound tyre and they are very square shouldered like most R-compound. In fact a 225 probably has a foot print of a 245 on a normal tyre. Also I think a 245/35R18 would have fitted, due to it's smaller (and factory spec) overall diameter. Unfortunately not many R compound come in that size! Btw, a non R-spec 245/35-18 will fit quite comfortably I would say (but I haven't tried it) due to much more rounded shoulders. Have a look at the picture below of the tyre I used and see how aggresive the shoulders are.
Not sure how the 225 rears will hold up on the track given my mods...find out next Friday.
Edit: I can now confirm that my 225 R Compound tyres are as wide (in fact slightly wider) as the factory 245. Hence you should be able to have 245 all round with a normal tyre no problem on this wheels with the same set up as me.