Originally Posted by
bigpaul652002
rotor size for clydesdale
I am putting together a surly km rigid and trying to decide on rotor size. Me 6'5" 300lb so i was thinking a little bigger 185mm . My mtb know is a 96 trek 930 that i changed into a 69er.
I'm up there in your weight range. And ... I ride a Karate Monkey. I have a 185mm on the front and a 160mm on the rear. You do want a smaller rotor on the rear than on the front as it will reduce the incidence of rear wheel lockup. Most everywhere you brake you will have the front wheel loaded WAY more than the rear brake.
If buy a brake kit at 185mm or 203mm it will come with the appropriate adapters. But do beware that your fork must be rated for a 200+ mm rotor. I'm pretty sure you can't put a 200+mm rotor on the stock rigid fork.