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TomKat08's avatar
TomKat08
Explorer
Feb 14, 2017

RV Tires - affect on ride

Own a 2002 Fleetwood Fiesta 31'. Ford F53 chassis. Prior owner had just replaced the tires. The tires are: TOYO M143 225/70R19.5. The tag on the driver side door says inflate to 80 PSI. The sidewall on the tire says 110 PSI. I'm driving them at 90 PSI. Wondering if the tires are part of the rough ride I'm experiencing and whether the PSI is making it worse and how low on the PSI can I go and be safe and how much softer would the ride be.. or are their better softer, smoother tires available.

Since I acquired it, I've added Bilstein Shocks, a Davis tru-trac Stabilizer, stronger control arms, and a Safe T Plus Steering Stabilizer. I'm happy with the stability and tracking but the ride is rough. (especially on these ill maintained CA. highways)

As always thanks in advance for your continued advise.
  • Do you know, at least, what the total weight is on each axle? 4 corner weighing is better but without at least the minimum information no one can tell you what you should or should not do.
  • Best idea is to weigh all four corners and then for each axle inflate to the recommended pressure for the heaviest tire weight. I found getting the right, not too high or too low, pressure does improve the ride, sway, bounce, and handling of the coach.

    Good luck in the search.