PSI
Trailer says 50psi, tires say 65psi, tire store says 5 less than max which is 60psi. Who is right?
Forum Discussion
Max PSI is bad advice. The correct way to do it is to weigh the vehicle and use the tire manufacturers weight/pressure charts to determine the correct pressure.
From the Michelin RV Brochure:
THE IMPORTANCE OF TIRE PRESSURE
The most important factor in maintaining the life of
MICHELIN® RV tires is making sure they are always
properly inflated. Incorrect air pressure for the weight of
the vehicle is dangerous and could cause things like
premature wear, tire damage, or a harsher ride.
An underinflated or overloaded tire will build up more
heat that could go beyond the endurance limits of the
rubber and radial cords. This could cause sudden tire
failure. Underinflation will also cause poor handling, faster
and/or irregular tire wear, and can decrease fuel economy.
Overinflation, on the other hand, will reduce the tire’s
contact area with the road, which reduces traction, braking
ability, and handling. A tire that’s overinflated for the
weight it’s carrying is more prone to a harsh ride, uneven
tire wear, and impact damage.
From the Michelin RV Brochure:
THE IMPORTANCE OF TIRE PRESSURE
The most important factor in maintaining the life of
MICHELIN® RV tires is making sure they are always
properly inflated. Incorrect air pressure for the weight of
the vehicle is dangerous and could cause things like
premature wear, tire damage, or a harsher ride.
An underinflated or overloaded tire will build up more
heat that could go beyond the endurance limits of the
rubber and radial cords. This could cause sudden tire
failure. Underinflation will also cause poor handling, faster
and/or irregular tire wear, and can decrease fuel economy.
Overinflation, on the other hand, will reduce the tire’s
contact area with the road, which reduces traction, braking
ability, and handling. A tire that’s overinflated for the
weight it’s carrying is more prone to a harsh ride, uneven
tire wear, and impact damage.
