I have a TPMS (Tire Pressure Monitoring System) and always make sure my tires have 110# of pressure before I start driving.
Naturally, as I drive down the road, the tire pressure increases. It has gone up as high as 130#s while driving.
My question is; when does the pressure become unsafe? My TPMS alarm is set to beep if the pressure increases more than 25%.
I've contacted Discount Tire as well as Goodyear and cannot get a definitive answer.
That is quite normal to see a 20 degree psi change when they warm up
I run my "Hs" at 125 psi and see temps of 140o on a regular basis.
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Don't confuse tire temperature with tire pressure. I'm talking about tire pressure increases, not temperature.
Thanks for the responses.
you can help control the pressure gain with tires filled with nitrogen . It hard to get 100% nitrogen because of the amount of air in the tires before filling them. fill , dump fill and dump then set the pressure to 110psi should help with pressure gain.
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I run my "Hs" at 125 psi and see temps of 140o on a regular basis.
I had wondered about these temperatures. Thank you for being specific. Yours are almost exactly what ours are. But when it hits those high numbers I get nervous.
George, I'll have a much better idea next week as I replaced my Tire Trakker with the TST 507. The Tire Trakker always gave me some weird reading, like would still show trailer tire pressure when miles away from the RW. Think the TST will give much better results.
We're in Page, AZ at the lower end of Lake Powell. The drive down here on the last day coming in was 104 degrees. We run the H rated Sailuns, based on coach weight I run 115 psi in them. When I stopped and walked the rig with a infrared temp gun (do that at least every 2 hours on the road) the shady side tires were running at 135-138 degrees and the sunny side were 145-148 degrees. Checked with tire engineer friend and he said that was fine with those kinds of air and road temps.
On a more normal 80-90 degree day my temps will run upper 120's.
George, I'll have a much better idea next week as I replaced my Tire Trakker with the TST 507. The Tire Trakker always gave me some weird reading, like would still show trailer tire pressure when miles away from the RW. Think the TST will give much better results.
We will have to get your thoughts about the TST at the rally.
You may find you need the bosster from TST. Otherwise, it's a fine unit.
I run my Sailuns at 115 at Ron's recommendations.
