Originally Posted by Bacciagalupe
Is there any problem with running these tires at 90psi, or less (e.g. 70)? I know they're rated from 30psi - 100psi, but I don't want to have any major performance penalties or increase the chances of getting pinch flats.
Shouldn't be a problem running them at 90 unless you carry severe weight (250+ lbs.?).
But with regular Marathons in general, the further they are away from 100 psi, the more sluggish they become, in my experience.
In case you don't have one, it may be a good investment to get a floor pump. As good as the Road Morphs are, they are best used as emergency substitutes.