So i just bought a set of TE37 18" 10.5 +15 squared set-up. What is optimal tire size for autox/track? Is it still required to pull and roll the front fenders if I do -3 camber?

 

275/35-18 is a great starting point. 888's are on sale at the rack right now, 295/30-18 , they will also work

 

why different profile and will i have to roll/pull front fender if i do -3 camber?

 

Not on the front, on the rear you will likely have to do a mild roll for the 275's and will need to do a slight pull for 295.

 

terrasmak is pointing out an alternative within approximately the same height profile for use on an AX course or track. (I personally feel those will be too low for street but that's me.)

I'm on -19mm lowering, 9.5/+15s and alignment at the low end of the stock spec at -2.0 rear and had to roll with 275/40 but there wasn't too much scrape other than over bumps and road irregularities. I've never had any interference issues (with 10+ sets of wheels run on my car) until I went with the lower offset.

With -3.0 deg and shorter tires, I'd bet you won't have much of a problem BUT I'd recommend you install the tires before deciding on fender roll.

 

I run 285s on 10.5x18s 22+ but on the street I run a 10 mil up front and 15 outback. So that's +7 rear and +12 front

Lowered more then mic and have 0 problems


I now have Federal 595RS-RR and they come in 275 and are wider I think then my oil 285s and again 0 problems