Originally Posted by
Jim Kukula
That is mighty high pressure for that width! There is risk of wrecking the rims - depending on the width of the rim! My rims have inner well width of 19mm. That's too narrow for such high pressure on a wide tire. Wide tires have a lot more surface tension at a given psi. Then on a narrow rim that tension becomes a force spreading the rim apart.
But hey, if it works for you!
The front rim is a 36 hole Velocity Mountain Goat in the 25mm width and the rear rim is a 36 hole Sun Rhyno Lite in the 25mm width. When I first got the Schwalbes, I was running them at 40 psi and the ride on pavement was awful. The side wall on the tire says 80 psi max, so I tried that and the ride quality and speed was phenomenally better. I was told it was safe to run those tires at 80psi with the wider rim?
I found I don't have traction issues running them offroad at 40-30 psi, even on wet dirt.