I can't fault the T30 bridgerocks mine came with. 5000klms now. Barely look worn. Estimate @10k lifespan. I've never managed more than 6k on any rear tyre previously. They grip great. Not had one slide yet. Edge to edge. Both peg feelers are half worn.
Road tyres these days have as much grip as my racebike tyres from the 90's.
But I might put an S22 on the front next time to try and reduce somewhat that lazy arse near chopper steering head angle. The Indian Chief Dark Horse has steeper steering geometry..fact.