@
im2lazy789
You're going to have to decide which is more important. Daily use or AutoX.
Reason being is that MPSS are a street tire. The MPSS aren't going to make you significantly faster compared to everyone else who are running 200TW (or less) tires at the AutoX.
If you're really worried about street wear and rocks, and still want to be faster at the AutoX you'll need two sets of wheels/tires.
This might not be as impractical as it sounds. Remember... MPSS can be expensive. Nearly 50% greater the cost of other decent street tires (for example, the DZ102 below are a brand new tire, comfortable and last a long time).
215/45/17
Dunlop Direzza Zii SS - $146
Michelin Pilot Super Sports -$140
Dunlop Direzza DZ102 - $98
All current prices are from TireRack