What is the correct tyre pressure for 235 55 R18?
I am swapping to 235/55 R18 V 104s. The ETRTO load inflation tables for these tyres would put the pressures at around 33/22 psi F/R unladen (22 psi minimum recommended) and 33/29 psi laden. Each vehicle has its own specifications for tyre pressure, but most fall between 28 and 36 PSI (pounds per square inch) however this could be greater especially if you carry extra load in your vehicle or run on larger diameter wheels (there is usually another pressure recommendation for these or the placard).