Cold tire pressure question?

sh410 wrote:

jadatis wrote:
Depends on the weight of your TT.
The specifications of your ST tires I can search , but if you read it from sidewall. I dont have to.

Could be that your TT tires need even more then 50 psi , and 10 psi extra is allowed by most tire-makers, and even used for 75m instead of 65m/h. But even if you drive below 65m its better to use the advice pressure for 75m/h.

No problem not filling with Nitrogen, all gasses can be mixed, and the advantage is not that big.
Miths about it are that tires stay cooler and pressure rises less for temperature rising in tire. these 2 are sertainly not true.

Even al little liquid water could keep the tires rubber cooler because of the energy that is needed to go from liquid to gas. and disadvantages of oxidation of rimm are nihil.

Goodyear at one time had a statment about over pressure by 10psi extra but not longer and it was only for their Marathon trailer tires. I can find no other brand that makes that statement.

Whatever the new ideas of tire maker are , Many tire makers allow extra pressure above that reference pressure for more load at lower speed.

Michelin has a special tire for campers with 5.5 bar/ 80 psi maximum pressure . The reference presssure though is yust as the Agillis 81
4.8 bar/70 psi and that is the pressure the maximum load is calculated for.
So also 10 psi higher not even for lower speed but to cover peakloads they wrote me.

Tireman9 yust recently had contact with goodyear about the new rules.
He probably will react with the exact differences between now and before, but I mean to remember they did not allow 87m/h anymore when 10 psi extra and loadreduction of 10%, but still the 10 psi for 75m/h.

And even if some tiremakers dont allow it anymore , I would rather risk their reprimande then damaging the tire, if that 10 psi is realy needed.