Quote:
Originally Posted by CWtheMan
In models 2012 there was no requirement for RV trailer manufacturers to provide any load capacity reserves with Original Equipment (OE) tires. Without your trailer’s model we cannot check the specs for that particular model.
All ST tires without a speed rating letter or the actual speed restriction molded onto the tire sidewall default to a 65 MPH speed Rating. Since 2015 all ST tires have speed ratings molded onto the tire sidewall. Maxxis is the only brand name that has not done so.
You have answered your wheel PSI dilemma. It is unsafe to inflate tires on a wheel rated at 80 PSI to a higher cold value. Did you check your valve stems PSI limit?
If your OE tires (LRE) had insufficient load capacity reserves so do the LRF tires – same designated size - inflated to 80 PSI, cold.
The official way for a tire manufacturer to display a tire’s speed rating is by placing a speed restriction letter at the end of the tire’s load index as displayed in the picture below.
Attachment 41931
Another option – mostly found on China made ST tires – is by molding the actual speed rating onto the tire sidewall.
Attachment 41932
There is no speed letter for 65 MPH. It makes one wonder why TRA used a bastardized 65 MPH value.
Attachment 41933 |
For many years there were no speed letters on ST tires. The TRA set their speed rating at 65 MPH. You can thank President Trump for speed letters/ratings for ST tires.