[CSBM5]

My experience is that the Rivals are better suited to heavy cars especially camber challenged up front ones. Jay's experience, so far, on his E39 M5 of the Rival vs RS3s is that the Rival is clearly the superior choice on that car, especially up front. The E90 M3 is about 400lbs lighter than the M5 and has about -1.5 camber available up front versus -0.5 on the M5, but the Rivals work great on the M3. So far this season I have 33 runs on this set with no heat cycling out evidence. Here's is Jay's thread on his experience so far.