Originally Posted by
srestrepo
i just my marathon winters on yesterday - i'm running them at 85 psi. they're mounted on 19mm internal width rims. my biggest concern is my weight. at 265, if i run them much lower, i'd be afraid of pinch flats. not that i'm hopping curbs or riding aggressively but still... anyone with a similar weight as me care to comment on how low you run the pressure before you get pinch flats?
You could probably knock 10psi off the front for starters. If I'm playing around with tire pressures, I'll take glances at the bottoms of the wheels while riding to see how much the tire bulges at the contact patch. A little is okay, but if it's squatting a lot you may want to use more pressure or move up to the next tire size.