idk how much preasure i run. prolly round 25, but if it's at max the bike will wabble on you(for rookies). just lower it some and try it out. if your talking about highway wheelis for long distance then lower the preasure some so you can control it. on a tight tire the bike likes to follow the crown of the road. meaning you will be heading toward the side in a short distance. if i'm doing a lot of long wheeli's i'll lower the preasure a good bit, then i'll just pump it up at a gas station later while out cruzing town or the curves.