You state "load class C "; do you mean Load Range C ??
Load Range C = equivalent to the old 6-ply rating and SHOULD be a LT classified tire.
The big problem in selling 265-75-16 size tires is that they are about the only size out there that comes in just about all of the common load ranges; P-rated = not an LT tire, therefore no LR rating, then LR-C (6-ply), LR-D (8-ply), and LR-E (10-ply); therefore there is a lot of room for confusion and mistakes are easily made.
On many occasions, I have ordered a dozen 265-75-16 LR-Es; and, when unloading them from the delivery-truck, end up with one or more P-rated or LR-Cs; sometimes it also works out the other way around, where I order four P-rated and get three and one LR-E.
It is the same problem when we are real busy and one of the less attentive guys grabs a wrong rated tire; either way, it isn't usually caught until days or even months later; the entire profit plus some is lost when that happens.
So far as a law suit, I have never heard or read of any in the many tire dealer periodicals that we get; not saying that it couldn't or hasn't happened, just that I am unaware of any actual cases.
One thing I like about good old size 235-85-16 --- I have never ever not in a million years seen one in any rating other than LR-E, so no mix-ups there.
If your tires are indeed LT265-75-16 Load Range C, and you aren't hauling a big gooseneck around, then I wouldn't sweat it; it took you quite a bit of driving to even notice the difference.
If they are
P265-75-16, then I would be careful about what I hauled and see if your tire guy friend will allow you a little trade-in value toward a proper set of LR-E tires.
If the mistake is truly his, then he will most likely eat the loss and make you happy.
On the other hand, if it was purely ignorance about tires on your part, then you should be willing to suffer some loss and count it as a lesson learned.
I piont out the radial d rated tire.. Never have done any more business with that tire store.....
