Quote:
Originally Posted by mlh
What hasn’t been discussed here is the LT tires have a higher built on reserve than the standard ST tires. If it's not documented it's not usable. Can you show valid documentation? They are rated to carry the same weight but since LT tires carry people the safety factor is higher. All DOT certified highway tires can carry people. If you weight the two you will find the LT are heavier than standard ST tires. Not applicable, different construction and almost always deeper treads on all LT tires. All that extra weight gives that extra reserve. Extra reserves, as you call it can only be provided in the tire's carcass construction. Add ons such as taller, more dense treads or the insertion of sidewall scuff guard materials adds weight, that weight does not add to a tire's strength/load capacity.
If you do a search here you will find this has all been discussed many times over the years. People think if they run some magic PSI and some magic speed their standard ST tires will serve them well only to have a blowout that does thousands of dollars damage to their camper, but it’s your camper.
Lynwood
|
All tires have usability parameters. Passenger tires even have quality grading. The difference in perception about available load capacities can be found in the regulations used for vehicle fitments. Automotive tires get load capacity reserves. Trailer tire fitments are not required to provide those type of reserves.
LT & ST tires do not carry the same weight, example, LT235/85R16 LRE has a maximum load capacity of 3042# at PSI. The ST235/85R16 LRE has a maximum load capacity of 3640# at 80 PSI. Casing construction materials are larger in the ST tires.