K1100RS tire pressure comments

[KCKBMOA]

I was at the shop getting my tires changed, and of course the wierd left side wear issue came up,....still no real answer on that I can accept. BUT, an interesting tire pressue comment was offered by a BMW R rider, and I'm curious if others place any truck in it. "What pressure are you runn'in" he says. I mentioned the owners manual, and he thought otherwise. "Try higher pressure, until the increase after a long ride is less that 4 lbs"...as close as I can remember. I guess the idea is to find a point at which the flex of the tire is at a point where the heat build-up stabilizes. More flex, more heat, and more pressure would = stiffer less flex, less heat. Have any of you fellows gone through this exercise? KC

[bikerfish1100]

One of those "everbody knows that" (meaning not everybody knows that, but you've known it for so long that you figure everyone else must have had a chance to hear it as well") is to look for a 10% increase from cold to hot tire temps. so if 35 psi was correct cold, then warm the tire would read 38.5 (35 + 3.5). if it read something else then you would either add or remove air, depending upon which way you need to go.

a 4 lb increase would signify a starting pressure close to 40, if also following the 10% rule.