Hard ride

[Flyerfan]

I own a 2005 36ftFour Winds Infinity when adjusting the tire pressure 100lbs front,90lbs on rear the ride seems very harsh these are the recommended pressures would it cause any problems if I lowered the pressure? in an attempt for a smoother ride.

[Flyerfan]

I own a 2005 36ftFour Winds Infinity when adjusting the tire pressure 100lbs front,90lbs on rear the ride seems very harsh these are the recommended pressures would it cause any problems if I lowered the pressure? in an attempt for a smoother ride.

[GaryKD]

Hi Flyerfan,
Welcome to iRV2. One must know the weight each tire is carying to determine the correct tire pressure. You could be right on the money by lowering the tire pressure. But first get all four corners of the coach weighed. Then go to the tire manufacturer's web site and see what the PSI should be for the weight being carried.

[Digital Boy]

Pressure lbs Recommended by who? The dealer?

Gary is correct. For the most accurate results you must weigh each wheel position then adjust pressures on each axle based on the highest weight reading on that axle.

I wasn't able to do that until I attended an FMCA rally.

With my first coach, a '97 Four Winds Infinity, I drove to a local moving company and drove onto their scales. For less than $20 I got the whole coach weight as well as each axle. I then consulted the Michelin PSI guide and adjusted my air pressures accordingly.