James’ 1974 W200 build

Right now I’m currently running a 33x12.5x15 Nitto Mud Grappler on a 15x10 wheel with 4” of backspace.

U.S. Wheel 70-5080 U.S. Wheel 70 Series White 8-Spoke Wheels | Summit Racing

I HAD a set of 35x16.5x15 super swamper mud boggers, on the same wheels, but they were just too damn wide and rubbed my fenders when I turned. Maybe a 12.5-13.5 wide 35” tire would have fit better!

I certainly like the more aggressive tread!
But the guys at the truck pulls actually say an All Terrain tire works better than a mud tire!

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The wheels that you posted say they have a 4-in backspacing which means 6 in towards the outside maybe that's a little bit of the problem of it rubbing the fenders? Of course if you go in too much it starts rubbing the frame...
I was thinking some 16s or 17s with a 35 12.5... that's definitely the style of rim I like the old school White...