Quote:
Originally Posted by Javi
Give me an LT tire in a 235/85/16 that provides 3500 lbs. or more of documented load capacity at my wheel limit of 80 pounds and I'm all over it.. or for that matter find me a 16" x6 rime with a 6 on 5.5" pattern and I'm all over that too... I just don't want to spend several thousands of dollars to replace axles and equipment to do it.. I'd rather just wait and buy a trailer equipped with 7K axles...
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In the evolution of tires it has become necessary to better describe the tires in use. Before the internet became saturated with tire information, people in the industry knew what a tire size was without complete instructions. About 5-7 years ago a more formal tire description was introduced. When reading newer information that includes tires size descriptions you will find them identified as "designated size". A tire's designated size is like these two examples. ST225/75R15 or LT235/85R16 are designated sizes. The prefix is part of that size designation thus, it includes a design. Those two designs have their load capacities described by the load range lettering system.
The size designation becomes a factor when complying with the replacement tire selection recommendations to use tires like the OE tires. A well trained tire installer is not going to replace a ST tire with a LT tire, even of the same physical size.