tires/weight problem

The 8.25" wheels will accommodate any of your choices.

I would look closely at a 275/70R22.5. You would be going from load range G to J.

Yes, your engine would be turning a few (not significant) more revolutions/mile (545 vs 538)

What you need to do is measure your current dual spacing. The easiest way to do this is simply measure the distance between the center of your tires.

The 255/80 has a listed minimum dual spacing of 11.2". The minimum spacing on a 255/70 is listed as 11.6". The 275/70s being suggested have a minimum spacing of 11.9".

I do agree the 255/70s are too short. Your engine will be turning too many RPMs. The 265s recommended in other posts fit well but they don't give you any increased carrying capacity.

Do you have any clearance for a taller tire? A 10R-22.5 is 1.9" taller but gives you 470# more carrying capacity and has a 11.1" minimum dual spacing.

bump

Just able to check wheel size. The are 22.5 X 8.25

If you got this in them now ( xrv) and you need 800 lbs...

9610/110 psi

Then the energy run @..

10610/95 psi.. ( gives 200 lbs over )

Your tire XRV dual psi 4805 110



7050/70 7410/75 7720/80 8080/85 8410/90 8820/95 9050/100 9370/105 9610/110





XZA2 energy is as close your going to get to what you have. 275/70/22.5/J

38 diam
10.9" wide
loaded radius 17.6
min dual spacing 11.9

PSI

6395 @ 120 max

Dual

9710/85 10160/90 10610/95 11050/100 11490/105 11930/110/ 12360/115 12790/120

Its duals on the rear and your asking about the tire width..

Your tire as stated XRV 255/80/22.5g

38.2 diam
9.9" wide
loaded radius 17.9
min dual spacing 11.2

5208@ 110 lbs

Its easy to figure out if you get a measurement from center of one tire to the other to see what your current spacing is... Then you pick a tire that fits in the minimum dual spacing category...

wheels are 22.5

What size wheels do you have. That will determine a large part of the answer, as the wheel determines not only what width tire, but also offset.

Look at the rear outer wheel-- size should be stamped there.

Now have 255/80R XRV. Want to go to 275/70R XZA2 or XZE2+