Tires...why do rv tires blow apart so bad?

chevor wrote:
I have had 2 blowouts and had to change 3 more tires on New trailers from the factory in 2.5 years 423,000 miles. I had to patch 2 tires on the truck in that time. The main culperate I have seen is screws and nails. One of the blowouts happened within 100 miles of the factory. The tires have no steel belt ply in its construction. I think it isnt right the tire manufactures claim those tires can handle as much weight just drop the speed rating. LT tires are so much strong. Only reason their rated lower is their designed to handle weight at higher speeds. Say 100 mph where trailer tires are at 65 mph.

Lets see if I understand this. You transported trailers and on average had a puncture that caused the tire to loose air every 84,000 miles. Maybe if you had a TPMS you would have known about the air leaking out because of the punctures and hopefully you would have stopped and avoided all 5 of the failures.

The bias tires that are not supposed to have steel belts didn't. I don't think you can find a tire that says it has steel belts in it that doesn't. The material i.e. steel, polyester etc must be molded in the sidewall of the tire. If you read the sidewall of today's radials I think you will see that most if not all say steel belts

Tires are designed by engineers to meet a variety of performance specifications. These include load, inflation, speed, traction, fuel economy, wear etc. All of these present trade-offs. Increased speed capability means lower load capability are just one of the more simple trade-offs to understand.
An ST235/75R15 LRC is rated for 2340# at 50 psi with a max speed of 65. It has about 2/3 of the tread depth of an LT235/75R15 LR which can go 85 mph is only rated to carry 1512# so I'm not sure in what you base the statement "so much stronger" on.