How to get the bmw m3 gtr in forza 4 Source Source Source Source Source Source Source Read Also: Bmw v12 lmr forza 4 Forza motorsport 4 bmw m3 tuning Forza motorsport 4 bmw 1 m Forza motorsport 4 bmw z3 Forza motorsport 4 bmw m5 e34 Forza motorsport 3 bmw x6