smkettner wrote:
Ginther wrote:
Anyway... I found this Marathon Inflation PSB
I've been running them at 90psi and so far we've put nearly 2000 miles on 6 separate trips in 100+ degree Texas heat without any problems.
Fingers crossed.
I don't think the PSB says OK to exceed max sidewall cold inflation pressure.
It would appear to say if your tire placard(gvwr sticker) says 65psi you can go 75psi however I think that assumes your sidewall says 80psi max.
The PSB doesn't mention 65psi or 75psi or 80psi at all.... or any specific PSI at all for that matter. Nor does it mention a trailer's placard at all either.
Actually it simply says if you travel at over the standard 65mph speed limit, increase the pressure by 10psi. And "The cold inflation pressure must not exceed 10 psi (69 kPa) beyond the inflation specified for the maximum load of the
tire".