I have stock Conti's on the front of my 6 and put 295/30 Conti sport contact 2's on the rear..........same make tires just different "model". I don't think they'll be on much longer though because I can break the rearend loose at 65mph on the freeway which is fun but not good when you actually want to accelerate. I'll be running BFG G-Force KDW2's in the near future since they have the BEST wet/dry traction around(for true street tires).