So I have decided on the d606 rear, now I am trying to pick a front. this is my commuter with about 20 miles round trip. I do go play on the muddy trails of Philadelphia avoiding the broken crack pipes, and needles. I've also hit the sandy pine barrens where my stock tire likes to wash out. the bike will see the rainy day ride on hard ball. im just worried bout "cupping" a knobbie on the front. the tire life im looking for is about 1 season, 4000-5000 miles, or 3000 if thats what im gonna get out of a rear 606. im looking at 90/90-21 (54S) Bridgestone TW41 Front Motorcycle Tire. and wonder if anyone has any feedback or suggestions for a front tire. thanks all.