Tire Load/Inflation Calculation
Exactly three years ago I bought new tires for my Jayco 23' (27'OAL). I had previously had the trailer professionally weighed at an Escapee's weigh station where they weigh the load on each tire. Unfo...
Forum Discussion
dave54 wrote:JimK-NY wrote:
If you have a TPMS, you might want to try an experiment. Wait for a hot Summer day with the sun beating down on the pavement. Watch what happens to the tire pressures when you start out at the cold pressure corresponding to the maximum load rating. After the tires cool, try the same experiment starting out at the maximum inflation pressure. You will likely see the roughly the same final operating pressure and may even see operating pressures higher for the tires that started out with lower pressure.
Tire manufacturers already know pressure goes up on a hot day and hard drive. They allow for that when setting the max pressure for the tire.
I agree, but that is not the issue. The tire that starts out with less pressure is going to flex a lot more. All that flexing is hard on the tire. It will generate heat that will raise the pressure. The pressure could end up even higher than a tire that started out at a higher level of inflation. Again, it is not the pressure that is the issue. It is the flexing and the heat build up. After a highway run with a load on a hot day, go touch your tires. You will quickly feel why heat build up is a concern. If you start out with more pressure the tires will flex less and generate less heat.
