Depends on which vehicle.
The sidewall of the tire will list max safe working pressure. The owners manual or a label near the door will show vehicle manufacturer recommended pressure.
235/85/r16
Lt235/85/r16
Ford Factory specs for this truck are 235/85/R16 and can be verified by many independent tire sources.
The 215/55-16 tire is 3.24% (.85") smaller in overall diameter than the 215/60-16 tire. It is never advisable to go over 3% difference. Stick with the OEM size as recommended by the manufacture of your car.
ok
My 1969 F-250 4X4 has stock LT235/85 R16 that have plenty of room in the wheel wells.
I have 18" wheels and i run my tires at 37 psi and it is perfect so try somewhere around that. It really matters what kind of tires you have. Look on your sidewall and see what the MAX psi is for each tire and fill them up about 85% of the max psi.
probably not.
A reflex angle is more than 180 degrees but less than 360 degrees. Therefore the reflex angle to 85 degrees is 275 degrees (360 - 85 = 275).
275
ive put 235/75s on mine but in the rear you will need longer axles or else the inside of the tire will rub
275 lbs