need tire advice
Last week I had my first blowout. Nobody's fault but mine, I was going too fast for the tires (rated at 65), I was doing just shy of 75. Normally I drive up and down the West coast but this trip I...
Forum Discussion
JIMNLIN wrote:Tireman9 wrote:MM49 wrote:
You can increase the speed rating by running up to 10psi above the sidewall pressure. I have an odd brand of ST tires on my TT. They were OEM from Winnebago. The tire is Ameritrack by Unicorn tire. The tires have the nylon cap that other premium tires have. They have performed well at 12psi above sidewall pressure. I have gone on two cross country trips without issue. One, Michigan to California, and Michigan to Ouray, Co. The funny thing I found is my trailer is severely out of balance side to side. The tires on the passenger side are wearing 50% faster. I plan on getting the Carlisle Trail RH tires for many reasons. The DFSS is one.
MM49
I am curious where you found documentation that Carlisle or Ameritrack allows an increase in the max speed for the ST type tire above 65mph?
Increasing pressure above max sidewall has been around since Goodyear made ST tires that I'm aware of and have personally delt with Goodyear tire dealer years back that refused to honor warranty issue on any of their tires that have been operated above max sidewall pressures.
I would advise anyone that increases tire pressure above max pressure on the tires sidewall to first check with your brand tire mfg/tire dealer.
Goodyear has issued a technical bulletin for their Marathon Radial and I believe that there is similar for Power King for their Towmax STR but have not seen that document.
I do not understand why some would think that these special advisories apply to all brands. Would you use the info in a Ford Shop Manual when rebuilding a RAM truck engine?
