Posted 4/9/2020 16:03 (#8176468 - in reply to #8176192) Subject: RE: 20.8 vs 18.4 tires
A 20.8R42 and an 18.4R42 are different RCI group. If your tractor is MFWD, doing this swap will mess up your driveline ratios. 20.8R38 is basically same height as an 18.4R42 and a 20.8R42 is basically the same height as an 18.4R46
20.8 vs 18.4 tires
