Originally Posted by
ultegrasti
check ur local track for rules and regulations. see what they run. if its usually just mod, then go with a 10.5, u can do just about anythin with that wind.
here in the states its interestin that on the east coast, generally 13.5 is seen as stock (older rules). whereas west part of the US goes by 17.5 being stock (newer rules).
R
Here in Michigan we run 17.5 as stock