Originally Posted by
gregjones
Having a starting point to adjust from makes life easier, whether using a fit calculator for seat height or in this case a tire pressure calculator. The only thing almost certain about using the max inflation spec on the sidewall is that you will experience a harsh ride, unless by chance your weight/tire combo happens to fit at the max range.
This is a widely recommended calculator:
Bicycle tire pressure calculator
Use the middle one....the one with the weight of the fully dressed bike and rider. You can input your weights, tire width and it has a few different ft/rr pressure drop rates.
It will be a much better starting point for a comfortable ride than the sidewall.
Using that calculator with 32c wheels the front should be at 56psi and the rear at 84, does the front seem a bit low for the front? thats only 1 PSI away from being outside the range of the Marathon Supreme 32 range