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tire pressure question(6 posts)

tire pressure questionsoulsurfer104
Jan 29, 2004 5:26 PM
does the amount of air you put in your tires have any effect on the puncture resistance of the tires? just a random question that came to mind on this morning's ride.....input please!
re: tire pressure questionSpoiler
Jan 29, 2004 6:03 PM
It depends on what causes the puncture. If you have too little pressure, a bump can cause the tire and tube to smash against the rim beat, causing a "snake-bite" flat.
If you have your tires pumped up rock-hard, and you run over glass, you're more likely to split the tire and tube.
Like touching a razor blade against a slack rubber band vs. a stretched out rubber band. I'd think with softer tires and pressure, the tire could conform around the glass whereas with a rock hard tire, it has no choice but to get impaled.
So, avoid flats. use bigger tires, lower pressureContinental
Jan 29, 2004 6:18 PM
Bigger tires can be ridden at lower pressure without getting pinch flats. If you weigh 170-190 lb use 28 mm tires at 95 psig and you'll hardly ever get a flat. Additional resistance is negligible.
So, avoid flats. use bigger tires, lower pressuresoulsurfer104
Jan 29, 2004 9:52 PM
just curious.....because i have been riding on Conti GP3000 tires and running them at about 140-150psi, and i have put about 7-800 miles on them without a flat yet. thought maybe my super-high inflation pressure might have something to do with that. (i weigh about 145)

sidenote: i would recommend the GP3000s to ANYBODY. i train on them on some pretty rough, debris-strewn roads, and they are tough....but theyre also light and handle very well. they are magical. try 'em!
So, avoid flats. use bigger tires, lower pressureSpoiler
Jan 29, 2004 10:01 PM
I like the ride of GP3000's also. I liked them because they came in size 25 and weren't outrageously expensive. But on my fixed-gear commuter I use Panaracer RolyPoly 28's. They give a 100% more comfortable ride, better cornering, and better handling in wet weather, and I haven't had a flat yet.
Drop your PSI to 95 front, 100 rear....zero85ZEN
Jan 31, 2004 2:14 PM
....and you will like the way your bike rides a lot better. Better handling, more comfortable, less flats. See Uncle Al's rant at on the benifits of lower tire pressure.