MTB:
For early season wetter conditions and/or more rude-root-rocky gnar a Maxxis EXO Ardent 2.25 rear and a Maxxis Minion DHF super tacky 2.35 front. Drier, later season I switch and run an Ardent on the front, and a Maxxis CrossMark 2.25 on the rear.
Road/gravel/dirt road and easy trail Bike:
Currently going with Michelin Country Rock 1.75's - front and rear.
"there is great chaos under heaven, and the situation is excellent"
Disclaimer: Telemark Dave is a Hinterlandian.
He is not from New York State, and in fact, doesn't even ski there very often. He is also obsessive-compulsive about Voile Charger BC's.