Wanting to change from STs to LTs..........
We are the proud new owners of a 2007 K-Z Sportsman 5th wheel. The unit is in EXCELLENT shape for its age. This is our first (but likely won't be our last). I have read numerous posts on the argu...
Forum Discussion
Me Again wrote:ah64id wrote:Me Again wrote:ah64id wrote:
Goodyear allows the Marathon ST tires to run 10psi over the chart or sidewall pressure, which increases the speed rating from 65 to 75.
I am on my 2nd TT and they have been on both, lots of miles and rough road miles. I haven't had any issues I can blame the tires for, just 2 flats from rock punctures on some nasty forest service roads.
I will need new tires next year and will go back to the 225/75R15 Marathon in LRD, I max them out at around 80% of their load rating.
I thought it was over chart but not to exceed max sidewall?
Chris
The press release I saw says 10psi above the placard limit, if the wheels and valve stems are rated for it. There is nothing that limits that pressure to the sidewall pressure.
So you know this is the 5th wheel section and they seem to be much harder on cheap ST tires, right?
So you know weight ratings are the same regardless of the trailer they are on...
A 5er with a 10K GVW will have less weight on the tires than a 10K GVW TT, and they both "should" have 5,200's and LRD tires. Mfgrs may cut corners here, not the tires fault.
