Tire inflation pressure
I have seen it posted many times to inflate tires 5-10# over rv listed tire pressure. Why would you do this?
Forum Discussion
dan-nickie wrote:Tom/Barb wrote:
The magic number is the cold tire pressure, (for that tire) that when running will be high enough to prevent over flexing of the tire side walls, yet low enough to not exceed the tire wheel maximum pressure.
I know that a lot of tire shops inflate the tires to the max listed on the sidewall of the tire.
If what you say is true, then almost all tires on the road are probably over-inflated.
How many coaches are running at gross weight? Would you want the tires to be pressurized to max all the time?
How many coaches are running truck tires? Do they require max pressure running on a coach?
You can find the sweet spot for tire pressures with a TPMS that gives TEMP / PSI.
My Front axel runs cold at 97 PSI and will heat to 105 degrees and stay there all day in hot weather. the rim and tire say 120 pounds max. at 120 you may as well have iron tires.
the rear varies about 5 pounds side to side
when you allow the pressure to be too low cold, the tire will heat beyond the manufacturers recommended temps and actually become un vulcanized and blow apart.
150 degrees is what most tire manufacturers recommend as the maximum safe temperature.
