How does over inflation affect wandering?
Assuming alignment is correct, how will 5-10 psi over Michellin's recommended psi based on axle weights affect wandering? I'm sure the rear overhang weighted down with cargo and fresh water and B and ...
Forum Discussion
I think the front overinflation contributes to the wandering. I doubt the rear contributes much if any to it. Rear overinflation is detrimental to ride quality-as the isolation of the springs, bushings and body mounts tends not to be the best. IMO if you don't mind the ride pump up the rear up to the sidewall limit.
Harvard may have input here, but it is possible the longer contact patch of the front tires due to lower pressure may increase the effect of caster and have better return to center. If you've ever driven a non power steering car you'll notice lower tire pressure increases steering effort, increases return to center, and is less sensitive (twitchy?) on center.
The longer I've had my motorhome the closer I come to the exact inflation table pressures-with little or no cushion. I like the improved rear ride and the better steering feel. If I'm trying to generate a safety cushion it is by keeping the speeds below 65 MPH and not seeking out the hottest of the hot pavement. Running pressure table spec is running to spec. There's no reason to carry 75 to 80 PSI in the tires when the front tires are specified to carry 50 with the load.
Harvard may have input here, but it is possible the longer contact patch of the front tires due to lower pressure may increase the effect of caster and have better return to center. If you've ever driven a non power steering car you'll notice lower tire pressure increases steering effort, increases return to center, and is less sensitive (twitchy?) on center.
The longer I've had my motorhome the closer I come to the exact inflation table pressures-with little or no cushion. I like the improved rear ride and the better steering feel. If I'm trying to generate a safety cushion it is by keeping the speeds below 65 MPH and not seeking out the hottest of the hot pavement. Running pressure table spec is running to spec. There's no reason to carry 75 to 80 PSI in the tires when the front tires are specified to carry 50 with the load.
