[gumby79]

Originally Posted by oldtamiyaphile

Might be different in the US, but here all you'll get is 60PSI especially from the new digital gauges.

Light truck tyres are different and will typically have more pressure info to cover various situations.

Yes the U.S. is different the other day I bumped my tires up to 80 pounds for Towing my friends F-250 on a car trailer and I got pictures of what happens with running excessive air pressure( sidewall Max) and not enough weight to compensate for the excess pressure this was at a gas station
As for LT's agreed situational awareness is required no matter what kind of tire is being used. Just got to know what to look for.
on my truck I'm running 65 PSI in the front to accommodate 3500 pounds I'm running 50 in the rear to accommodate 2500 pounds the tires are rated for 6000 + pounds per axel at 80psi . I only have 5520 pounds of weight total so I have to compensate otherwise I have too narrow of a contact patch. This reduced contact patch compromises abilitie to drive safely on icy roads.
During the said experiment I had a deer jump out on me hit the brakes and rear locked up. And the rear tried to come around on me got pictures of the skidmark only 4.5"wide with a tread surface of 7.5".Running 80 pounds of air these studs in my winter snow tires were not even touching the road not even picking up dust.
Gotta figure out how to get my pictures reduced on my new phone. I haven't figured out yet how to crop them down small enough to get them to upload here. Expect pictures of contact patch and as before referenced temperature references for what is actually touching the roadway and developing heat 30°f variation between Center 45f and age of tread 20f ground 10f measured with a Ir temp gun. My point is that just because the tire can hold more air doesn't mean it's necessarily a good thing if your weight rating of your tires is properly matched to the weight of the vehicle yes you can run 100 PSI provided the tires/wheels/valvestems can handle it and they are narrow enough and were constructed correctly for the amount of weight/pressure you are running. This would also require a completely engineering of the suspension system so that it didn't beat you to death before you got out of driveway.
Eg the new Tall Skinny high pressure prototype tires found hear

http://ecomodder.com/forum/showthrea...s-25208-4.html

On my bicycle back in High School, my mountain bike tires were rated for 60 PSI Max I ran a 85 - 90 PSI for lower rrc never had a failure 3000+loged miles. however some racing tires for bicycles are rated 200 PSI with 10 pound bicycle and 150 pound individual you can do the math and figure out how many square inches of contact patches available for traction, steering , and breaking, less than 1sq in