OK, here is what I found in the microfiches and from personal

observation of the wheels I have:

For the 140 the fiches call out P/N 688140 as a 4 1/2" wide 15" wheel

and P/N 684000 as a 5" wide 15" wheel.

For the 164 the fiches call out P/N 684001 and 1221462, both

5 1/2" wide 15" wheels and 688140 and 677100 as 4 1/2" wide 15" wheels.

My 69 164 has the 677100 wheels on it and they are the old style,

with the snap-on hubcaps. The wheels look a LOT like a 122 wheel.

On my 145 I have 684000 which is the "new" style with rounded squarish

holes and a screw in the middle of the hubcap. They are 5" wide.

I also have a pair of 1221462 wheels which are also "new" style, 5 1/2"

wide.

Ratinally I would guess that the 684001 and the 1221462 are near-identical

but I have not checked the amount of offset. That is based on the

assumption that the 684000 (5") and 684001 (5 1/2") probably only

differ in width.

I hope this is helpful.