White. Was thinking about getting black rpf1 wheels, My options are 15x7 35 offset and the 41 off set one. I did not really want the 15x8 as the weight increase and the different tires size i would have to run. I was not interested in getting the rotas though.
Guess tire pressures and alignment are the only things you're allowed to play with. Is everyone required to run the same tires (series sponsor?) or do you get to choose?
The time attack & autocross classing restrictions here aren't as stringent as scca/nasa, so I get quite a lot of free room to tweak the car.