Primewell ST tires

They're $102 each plus mounting and balancing. I passed on them but was curious just incase they had a stellar reputation that I didn't know about. We just returned from a week long trip and I noticed a bulge in the tread of one of my six year old Marathons. For our relatively lightweight 8500~lb 5th wheel, I'm thinking of another set of Marathons or E rated Carlisles for availability in case I damage one on the road. I've had good luck with both as long as weight is well within their ratings. We might put 2k miles a year on them in 6-8 trips so that magic 3-5 years of tire life comes around long before they're worn out from mileage. I'm pleased that the Marathons lasted six years.