Multiple claims of non-standard load capacity.
I understand the occasional different load capacity if we are looking at tires developed under ETRTO guidelines vs TRA guidelines as this is a metric vs inch with unit conversion and mathematical rounding resulting in most of the small differences. As previously stated I do not understand how so many manufacturers can claim that tires developed under one set of standards, such as TRA, can come up with so many different load capacities.
FE has identified four different claims for the ST235/80R16 LR-E when inflated to 80 psi, 3,420#, 3,500#, 3,520#, and 3,525#.
Now the 3,420 is per TRA standards and formulas, so I would expect most companies follow those guidelines. FE provided the link to the newcomer
Radar Angler RST21 with the highest load capacity claim.
I would really be interested in knowing who else claims to have the magic calculators that come up with the other loads.
On a related note can anyone confirm that the RV placard loads match the loads molded into the sidewall of the tires and does that information match the information in the vehicle owners manual.
If an RV mfg is going to specify a non-standard tire then in my book they also have the responsibility of proper and obvious notice that a special tire is needed and ensuring that these special tires will be available to the buyers of these special RVs for at least the next 10 years.
If you own an RV that takes this size tire, I would like to collect the following information.
1. Picture of the tire size on the tire
2. Picture of the placard
3. Picture of the inflation and load information molded on the tire
4. Picture of the tire DOT
5. Picture of the page in the owners manual that advises the owner of the special tire needs
I previously filed a complaint with NHTSA concerning what appeared to be an improper load rating for the tire vs the GAWR. I was informed by NHTSA that the RV manufacturer claimed to have a letter that stated the tires were capable of carrying the extra non-standard load. So since there was a letter, no action could be taken as I had no proof of a non-compliance (load numbers on the tire not matching the higher load or incorrect information in the owners manual).
I am willing to engage NHTSA but need facts and data.
You can email the proof I need to build a case or to learn that I am wrong to Tireman9@gmail.com
I believe that a failure to take appropriate action will result in more RV mfg playing games and paying more attention to meeting the letter of the law while flaunting their disreguard of the intent with the result being the RV owners getting the short end of the stick with ever increasing number and severity of tire failures.
