I-9 vs. W-9

I don't know exactly what the front tread is but the standard rear tread on the I-9 is 50 1/2" whereas the standard rear tread on the W-9 is 60". Standard tires on the I-9 were 7:50 x 18 front and 13 x 32 rear. Standard tires on the W-9 were 7:50 x 18 front and 14 x 34 rear. I-9 factory optional tires were 7:00 x 20 & 7:50 x 20 front and 14:00 x 23 & 18:00 x 26 rear. W-9 factory optional tires were7:00 x 20 & 7:50 x 20 front and 15 x 34 and 18 x 26 rear. As you also know, the I-9 is a International and the W-9 is a McCormick or a McCormick Deering depending on year model. The I-9 also has a foot accelerator and a clutch brake. Hydraulic brakes were optional on the I-9.

Harold H