Questioni have 2 sets of uniroyal liberators , 1 set on my 93 s/sidekick and another on my 06 chevy sliverado z-71 and i will say that i will not buy any other but i need to know why they do not make it in 6 ply for my trk. my father in law has some only 16's and they are more than 4 ply whats up with that, i will buy again real soon as i'm pushing 65,000 on this set, but i do haul 3 ricks of red oak 2 times a yr. over 270 miles 1 way and i'm always nervous about it but so far so good, but really why do they not make it in 6 ply, if they can please send a wood and get it within the next 3 months please, do not want 8 or 10 ply just 6, is that asking to much for the very best all around tire out there, thanks again and please send me a note back at my email thank u Barry
AnswerBert,
First, let's clear up a couple of misconceptions.
The term "ply" doesn't have much meaning when it comes to tires anymore. Modern radial tires can be made from a variety of materials, all much stronger than the the number of plies would indicate. For example, medium radial truck tires use a single steel ply in the sidewall and they can be inflated up to 140 psi (depending on the tire).
Most light truck tires use 2 polyester plies and 2 steel belts, and sometimes with the addition of one or 2 nylon cap plies for higher speed ratings. However, the size of the polyester cord and the amount of cords per inch varies depending on the Load Range.
But smaller pickup trucks use large passenger car sizes - and those come in Standard Load and Extra Load. But it is the size of the tire that determines the load carrying capacity.
So if you use the same size as what originally came on your truck and follow the loading limits published by the vehicle manufacturer, then you will have enough load carrying capacity in the tires - provided you use enough inflation pressure. You can find the original tire size by locating the vehicle tire placard - which is usually located on a doorpost or in the glove box.
