The 10 lug on 7.25" bolt circle with a 5.25" center hole, 22.5" tubeless rims were only used on the 1956-59 Series 4000 Chevrolet (1-1/2 ton) trucks, the 2-ton had 6-lug rims...I don't know it GMC used them or not.

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD