Tire inflation pressure

We are new owners of a 2005 fleetwood bounder 38 n which has a recommended tire pressure of 90 psi. I just had my mh weighed , could only do each axle. Loaded for travel steer axle was 9520 and rear axle was 16760. My tire size is 275/70R22.5 for steer and dual. According to Goodyear chart 10800 inflation is 90psi and for dual 4980 per wheel is 90 psi. Would it be suggested to go to 100 psi for each wheel?

Depends on what you mean by "rv listed" tire pressure.

The cases where people are suggesting adding 5-10 lb is when:
1. Motor home is weighed at the scales getting the 'front' and 'rear' weights.
2. Access to a four corner weights are not available.
3. The tire manufacturers chart for 'minimum' is used to determine tire pressure.

In this case, since only the front and rear weights are known there may be a variance in the 'side to side' weight.
Since the tire pressure should be determined by the heaviest side of an axle, 5-10 lb may be added to allow for side to side weight variance.

NOte: adding pressure above the RV label or tire sidewall is NOT recommended.

The tire inflation charts give the MINIMUM PSI for a given weight.

Said another way, if a wheel position weighs more, you move "up the chart" to a higher PSI.

So, a good idea to inflate to 5-10 PSI over the MINIMUM.