I'm still on the factory tires. I have just over 10K on them. I had one blow out, but otherwise they have been fine. I've towed from 65 to 72 with them and they do well. We will be switching to something different in February 2015. Either Ribs or 614s most likely
Ct..
That's the same with the ribs too. The only tires that are "rated" for the weight in the size are the super st's. None of the others "officially" handle the weight.
Ct..