Tire pressure
Our Casita has one axle. The tire on the left is a newer Hi-Run load range E with max cold psi 80. The tire on the right is an older (unused) spare Goodyear Marathon load range C with max cold psi 50....
Forum Discussion
One axle with two different tire types/load ranges/tread design is a braking safety issues...especially a hard braking event on wet pavement. One tire with the better traction will lock up causing flat spotting... or control loss depending on situations.
Multiaxle trailers have a need for max sidewall pressure (stress from side scrubbing). A single axle has no side scrub issues and no need for max sidewall pressure in this situation.
The trailer came with load C at 50 psi which is a good fit for lightweight trailers. Now 80 psi tires are mounted. I use P tires on single axles for better long term wear and performance.
Using 80 psi can cause the tires to balloon the center of the tread and doesn't allow full tread contact leading to less braking performance. There are reasons for OEM C load tires on light weight vehicles.
If you don't want to weigh the trailer use its GVWR and divide by two. Now find your a tire pressure load chart and use that as a base and fine tune with a chalk mark across the tread. Pull the trailer in a straight line for a couple of blocks. Add or reduce psi for a even wear across the tread.
This is a old method we used when only a few tire dealers had tire load/pressure charts.
Multiaxle trailers have a need for max sidewall pressure (stress from side scrubbing). A single axle has no side scrub issues and no need for max sidewall pressure in this situation.
The trailer came with load C at 50 psi which is a good fit for lightweight trailers. Now 80 psi tires are mounted. I use P tires on single axles for better long term wear and performance.
Using 80 psi can cause the tires to balloon the center of the tread and doesn't allow full tread contact leading to less braking performance. There are reasons for OEM C load tires on light weight vehicles.
If you don't want to weigh the trailer use its GVWR and divide by two. Now find your a tire pressure load chart and use that as a base and fine tune with a chalk mark across the tread. Pull the trailer in a straight line for a couple of blocks. Add or reduce psi for a even wear across the tread.
This is a old method we used when only a few tire dealers had tire load/pressure charts.
