Forum Discussion
CapriRacer
Aug 09, 2017Explorer II
webejpn wrote:
So what's your recommendation based on everything i've posted?
First, check your vehicle tire placard. It will be on the driver's door frame.
My book says your truck came with P265/65R18's, not LT265/65R18's. It also said the specified inflation pressure for those P type tires is 35 psi. That means the LT's should be inflated to 50 psi.
Please note: I am not a fan of replacing P type tires with LT type tires because of that inflation pressure change. That increase changes the tire's spring rate and that has handling implications.
Second, contrary to what some have said, there's no fixing a tire once it has developed irregular wear. The best you can hope for is to have a new wear pattern worn on top of what is already there and covers it up. In this case, I don't think that is likely.
What was the cause? Probably alignment. It is my opinion that the published alignment tolerances are too wide by half - that even alignments within those published tolerances can cause irregular wear. You need to be within the inner half of the tolerance to assure good tire wear.
And that assumes the target value is good for tire wear - and in many cases, it is not.
It also assumes that the load you are putting on the truck is not skewing the truck too much.
So I think a look at the towing specs vs the trailer specs are in order. You might need to weigh the package to make sure you are not overloading things.
Truing tires? Yes, that used to be a thing - that was mostly used because there was no way to correct an "out of round" tire assembly. I put those quotes there because the physical dimension was only part of the problem and truing the tire only addressed that one issue.
Tires have gotten a lot better over the years and I would expect it to be difficult to find any of that equipment still in use.
OK, that's a start. There may be more to do as things are discovered.
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