A Multi axle trailer should have the same load range tires on all axles.
All PSI should be the same.
All the tires should have the same type tread pattern.
Doing all the above ensures equal braking performance especially under hard braking events and especially on wet pavement....especially on a trailer that sees lots of hiway miles of service.
Most load E tires on rv trailers come with wheels able to meet 80 psi applications at a max.
Over pressuring a wheel can split the bead seat flanges and even crack the wheels valleys.
In your case I would shoot for 80 psi and watch the tires temps and wear patterns.
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'03 Dodge 2500 Cummins HO 3.73 NV5600 Jacobs
'98 3500 DRW 454 4x4 4.10 crew cab
'97 Park Avanue RK 28' 2 slides
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