Recent content by tireman9

Some comments on DOT date code. re "oval" Tire mfg use different methods of changing the aluminum"plug" in their molds for the "date code". Not all use an oval plug. Some have used stamped steel strip or "tin" so it can have a different appearance. Some things that is true about all DOT...

Load capacity is a fundamental part of physics. Air pressure and volume (tire size) support the load. The formula for ST tires is based on an assumption of 65 mph max. There is no magic in the letters "ST" and if you look at the load capacity of LT tires (higher speed) what was the trade-off...

You might want to review the topic of Interply Shear on TT application. I cover this in my RV Tire Safety blog. Basically you should run the inflation on the side of the tires associated with the max load. You shoulsalso ensure the measured scale weight is no more than 90% (85% max is better)...

Have you confirmed your TPMS is working properly? What is the Low-pressure warning level? If you unscrew the sensor you should get a warning within a few seconds. If not you need to contact the TPMS company/dealer and ask them about the problem.

Yes, I know tires can "age-out" before they wear-out". I am asking the question to try and learn if others know this and if some do, what are the numbers. IMO 95-99% of RVs will age out their tires BUT I am having a problem with a supposed"expert" who does not appear to know much about RVs but...

Was wondering if folks here had ever heard about tires aging out before they wear out. tried doing a couple searces but got no "hits".

Any chance you have actual scale readings for each tire? Have you been running 95 psi cold? Do you have a TPMS? Have you filed complaints with NHTSA for each failure?

"Blowout" is such a generic term. Any chance you have pictures? Have you filed a complaint with NHTSA yet?

Wondering about the experiences folks have had when they purchase a new 5h wheel. It would help my study if you could reply to these questions: 1. Did you ask/request the tires be changed? 2. If yes, did you change brand or size or both? 3. About how much were you charged? 4. If you asked...

There is no official margin of safety in the common sense. DOT regulations only have minimum performance requirements. Some tires exceed them by 10% and others may only exceed the standards by 0.5% No way to know by how much any individual tire exceeds the requirements. LT tires have different...

OK the consensus of two tire engineers and a person who reads Federal Regulations as a hobby is that the subject tires are in fact LT type tires but the tire company is limiting their use to trailer applications only. IMO the fact that ST tires are limited to Trailer Use ONlY is at least in...

The tire is clearly an LT235/85R16 I find no reference to a LR-G in that size in my 2015 TRA standards book. Now there could be a letter to DOT from Sailun for that Load Range I also do not know what DOT standard allows a tire to be marked "For Trailer Use Only" I do note the tires are...

Just because a tire is round and black does not make it "equivalent" to another round and black tire. Mounting issues can usually be traced to improper method. See previous posts on front/back side of wheel, use of proper tire lube not dish soap and training.

Almost. ST tires are not allowed on "passenger vehicles". I can find no prohibition about ST tires on steering axles. ST tires have a different load formula than LT which is also differnet than P type, just as the regulatory tests are different. Tire "strength" is established by a "Plunger...

Yes that PDF is a scan from the US Tire & Rim Association 2016 yearbook. This chart would be used by almost all tire companies. - - - Updated - - - Can you capture pictures showing the tire size and the Load information. Also the full DOT serial (including the date code ) Tires are suppose...