Originally Posted by FordHauler
Fred, I would say that you are lucky to be alive! 75 mph ?? NO trailer tire that I am aware of is rated for speed above 65 mph. Read your tire sidewall! Just sayin......
There's a common misconception that PUPs and A-frames suffer from the same "China bomb" syndrome that the big boys do. We don't, even though we have the same cheap Chinese tires as OEM equipment. Very rare is the tale of blowouts among PUPs and Aframes with tires less than 6 years old - or at least I don't see them like I do for the big boys.
I suspect some of the reasons for that is
- we are talking single axles for the most part. Not nearly the squirming in corners.
- in the smaller sizes, the tires have more margin in their construction
- there's not as much profit to be gained by putting absolute minimum capacity tires on a single axle with smaller price differences between one tire size and the next. Hence, the OEM tires supplied tend to have more reserve capacity at the small end of the RV spectrum.
- it's harder to cram as much stuff into a PUP or Aframe due to its fold-down nature. Again, makes it easier to avoid overloading the tires.
In my specific case, I knowingly exceeded the 65 mph tire limit for a 20 mile stretch of interstate to real-life test vehicle and tow handling with the Equal-i-zer hitch. I had already driven 30 miles at 65 and below. I normally set the cruise control at 65 (actual 63 mph) on the interstate. I do exceed 65 occasionally to pass a slow-moving truck. Non-interstate is marked 65 and below in Colorado.
Since my Aframe is kept in the garage where I have an air compressor, tire pressures on TV and Aframe are always checked before wheeling the camper out and hooking up.
Even when the camper is fully loaded with our stuff (we are pretty minimalist) and a full water tank, the Aframe tires are at less than 80% capacity and inflated to full rated air pressure. I feel pretty safe with the OEM 14" LR C Trail Express tires to date.
I had similar experiences with PUPs and OEM tires in the past - I never wore them out or even suffered a single flat. The tires eventually aged out and needed replacement for sidewall crazing and cracking after about 7-8 years when stored outside (same is true of boat trailer tires).
FWIW, there are now trailer tires available with higher speed ratings in certain sizes.
now: 2014 Rockwood A122 towed by Hyundai Entourage (minivan), Equal-i-zer 600/6000
then: 2000 Coleman Westlake (sold 2007) towed by 1992 Ford Explorer
1986 Coachmen PUP (sold 1993 after arriving in Juneau, Alaska) towed by 1992 Ford Explorer