Norm Peterson
corner barstool sitter
Measure that wheel's backspacing, from the innermost face of the inside flange to the mounting face on the back side of the wheel center (do not measure from the tire bulge). Subtract half of 9.5" from that and convert to mm. That'll be close enough for discussion purposes.I can definitely get a 275 on there. I put the fronts on the rear to see how it looked.
It was on a 8.5 in rim, no clue what the offset is.
The 9.5" comes from 8.5" wheel width (which is measured between the bead seats) plus two flanges at half an inch apiece.
Norm