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.