Trail boss tcs tough high grip tight enough tread spacing for high speed drag free onslaughts yet blocky and tall enough to really dig in when it comes time to slam on the brakes a rounded profile and staggered supported side knobs keep clamoring for traction even as the trail loses its camber want to go out and own it be the trail boss tubeless compatible system tcs tubeless compatible system standards driven system designed around tubeless bead shapes and hooks to create repeated seal