Tire placard
I feel silly asking this, but i don't know where the sticker is that says what my 1999 Rockwood Ultralight 24' tire pressure is. Where would the sticker be located?
Forum Discussion
Sagebrush wrote:
Most RV's will have the tire size and recommended psi on the VIN sticker or close to it. But its better to use a load chart.
One safe way of choosing an air pressure is to reference a load chart for your tire size and choose the pressure that covers your GVWR. Even better is to know your actual axle weights and adjust using a load chart.
Most stickers on trailers I've seen just use the tires max pressure rating and the centers wear out first if you do enough miles.
Motorhomes usually have an actual calculated number based on the tire size and GVWR just like your car or truck does.
I'm using E rated ST tires instead of the usual D rated my trailer came with. Thats what most shops around here are stocking. So, I'm not running 80 psi in mine like the sidewall max says. I rather use a load chart!
In your case, using a chart is the correct way to go since LR E has a much higher weight rating when tire is inflated to max sidewall pressure. And yes, because of that you would most likely wear out the center of the tire if you ran sidewall pressure.
The downside to moving up a load range is you now have more rolling resistance, more tire weight and the actual capacity may not be the same across all tire brands for a given tire pressure and not many tire manufacturers publish load inflation charts making that a pretty sketchy proposition.
Good tire shops will order in the correct tire you need rather than slapping anything they have in stock just to get you out the door.
