Our car & MH tyres have the recommended pressure on the tyre wall. It’s the tyre that determines the pressure, not the type of TT. (As far as I know, but I may be wrong.)
Isn't that the maximum pressure on the tyre wall for when the wheel is loaded to the maximum weight. If the weight is less than the max the pressure may be reduced from the max in proportion.
Looks like outstandard tyre.
But on sidewall you can find next.
1. Maximum load or loadindex
2. At??? Psi or kind of tyre determines AT wich pressure the maxload may be caried upto referencespeed of tyre. Officially called reference-pressure.
3. The speedcode wich determines the referencespeed.
Then from trailer tge total weight or max allowed total weight.
And max permissable axleload.
Most likely 1 axle.
With that I am able to calculate a highest pressure, so maximum reserve, but still no screws trembling loose.
The pressure shown on the tyre sidewalls is the MAXIMUM it should be inflated to.
The tyres on our caravan read PSI 65! Handbook and side plate on the van states 51PSI.
Don't forget tyre pressures increase as they warm up so you need to allow some leeway for this to occur without over inflation occuring.