y180sx

I'm sure this is a duplicate post but i'm having trouble finding the answer i need.

I recently moved and now have a drift track 30 min away and a circuit 2ish hours away. I've been drifting my 180 for a while now, but i'd like to start getting into some grippy driving.

My question is what wheel/tire sizes should I go for? I know that has been asked a million times, but i'm looking for performance, not looks. Currently, I have Enkei RPF-1's 17x9.5+18's all around. 235/40 up front and 245/45 in the rear. Front rubs at lock and I'm sure would rub under hard turning. Would i be better off getting a 16x9 or 17x9(+15?)? Can anything bigger than 235 fit under a stock front fender (rolled not pulled)? Do I even need a 235? or would a 225 be okay? I know the tire i choose plays a lot into it. Right now i'll probably get Nankangs as i cant spend $500+ for a set of tires.

My suspension is pretty well upgraded. just needs to be set up to grip, not drift.