The main consideration when swapping rims and centers: is the center the right diameter or can it be machined to fit the rim at the correct back spacing?
In the case of many 20" wheel centers they are too small or shallow to fit in a 22.5" rim at proper back spacing. I looked into that for my 2 ton years ago.
The 8 hand hole 18" 1 ton wheels have an ID and center OD of approximately 17-1/8".
A 19.5" rim has an ID of about 16-7/8". Which is only 1/8" smaller per side.
If the center from the 8 hand hole 18" wheel were trimmed to about 3-3/8" to 3-1/2" deep overall that would remove the rivet holes and nicely position the center just outside the corner of the 19.5" drop center for welding, allowing the correct back spacing. Or the center could be turned some to reduce diameter and slip party inside the 19.5" drop center.
Cutting the wheels apart and more careful measurements would be necessary but so far I think it's close enough to working that that'd be the logical next step.
Grigg
Last edited by Grigg; 02/02/2016 3:14 AM.
