I have been following a number of RV forums and want to do a bit of a summary for those that don't have the time or interest to read a number of posts on this Blog: Remember more than half of the thousands of RVs that have been checked have been found to have one or more tire and/or axle in overload. So nect time you camp you can be pretty sure that one or both of the RVs parked next to you are overloading a component.
- You should have a Digital tire gauge. I
have posted the results of my tests of dozens of gauges that RVrs were
using and the bottom line is that about 15% were off by more than 5 psi
which IMO makes that tire gauge a good door stop or tent peg. I have
provided information on how to do your own gauge "Calibration Check" to
confirm the accuracy of the gauge you use daily and how to maintain your
- If you follow the advice from the two Tire
Engineers on this thread you will be setting the pressure based on the
appropriate method here:
- On your TV inflate to pressure based on the Door sticker and Owner's manual for "Fully Loaded" operation. BUT get on a scale at least once to confirm you are not overloaded.
- If you have a multi-Axle trailer you should be running the pressure
on the tire sidewall. I have written in my Blog and provided the
technical justification and need to follow this advice. You should still
go across a scale and calculate the actual tire loads to confirm you
are not overloading one or more tires
- If you have Motorhome
you need to confirm your unit's "corner weights". Use one of the
worksheets I have provided links to. Use Load/Inflation chart from your
tire manufacturer, to confirm you are not overloaded and identify the
heavier loaded tire on each axle. Using the pressure for that load add
10% (without exceeding the wheel max) and that is your Cold set pressure for all tires on that axle.
- If you follow the above there should be no reason to be chasing your
tire inflation around unless you have a major change in Morning
temperature ( More than say 30°F ) as you would only need to "Top Off"
the air once a month at most.
- Don't be too anal about
inflation. Variations of 1 to 3 psi day to day are normal. You should
not need to make adjustments unless the Cold pressure is 4 or 5 psi away
from your goal. (Multi-axle trailers might try and get no lower than 3 psi below tire sidewall pressure)
TPMS are a WARNING device and like Insurance we should all be using
them. Also just like Insurance they cannot "Prevent" bad stuff from
happening but with luck they may give sufficient advance warning to
lessen the impact of the bad stuff that does happen.
- If you are parked for more than a day you need to cover your tires that will be in direct sunlight with WHITE tire covers. This protects against both UV and higher temperature damage which can shorten tire life.