Originally Posted by
Nick Bain
LBS, they don't stock 28's of course.
You "could" run them at 90 psi but will most likely run the risk of pinch flats. Run them at the min. and see what you think. Chances are you will be satisfied with that. 115 ain't all that bad for a 28mm tire! Next time, pay attention to the min/max psi rating of a tire to get a better idea of what you want in ride quality.
Cheers