[Pathfinder75]

Originally Posted by Dave W

You are adding l a half inch to the height
80s = 30.8 dia or 15.35 radius
85s = 31.7 dia or 15,85 radius

bigred715; 85 series also and the tire does rub on the plastic fender"

I Wish I had gone with 85's as I wanted a little more lift to help be closer to level but feared the rub possibility hitting bumps. Had not thought about plastic fender rubbing since tire is 85%sidewall (taller) so 5% less in tread width (narrower).
I wonder If bigred715 changed rims that effected wheel offset some.

1/2" would not be much but wish I had it. I'm at 13' 0" now at Front AC unit.
Any upgrade will change how the trailer was manufactured. This is done regularly for tires, hitch pins, brakes and axles. Axle changes from 7k to 8k is common, some do the Morryde IS upgrade or just by new axles and buy one size up for safety.