The Bon Jon would be a great tire to use if you wanted to validate the rank order accuracy of these drum tests. It performed
abysmally on Tom Anhalt's drum as well.
Meanwhile, these results don't seem to square with Tour's test apparatus, which on a good surface had the Bon Jon at 6bar seeing lower rolling losses than the GP4000SII at 7bar (Jarno's data has the reverse by about 3 watts).
BQ's own measurements suggest that the drum tests are perhaps inaccurate in how they capture the crr effects of tread compound, and that they significantly overemphasize it.
It's all a big mess. Makes me want to get a power meter, really.
Originally Posted by
Barrettscv
But it's not a rugged tire for any kind of gravel
Unprotected tires on rough/loose surfaces need to be wide enough to not have lots of sidewall exposure. I haven't had any trouble offroad with my Rat Traps, but they're also enormous and so rarely need to be run at very extreme drop.
I think Stampede Pass would be one of the more difficult Compass tires to ride on its namesake, if that road is still the way it was last summer.