15" wheels and tires

[Bryce]

i am looking for 15" wheels and tires. i cant find any good tires with a 245 width. The only ones i found are a housier A6 race compound tire. How well will these work on a street car that will see some autcross days. i dont put that many miles on the car.

Second part of the question is i really want to run a 15" wheel to reduce weight, I have light car and 11.75" brake is all i need to stop and those fit in a 15" wheel. I cant find any really cool wheels that are 15x7.5 with a 4" backspace, any suggestions.

I can always go to a 16" with tons of tire options but 16" wheels are still rare.