| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Looks like 5 on the front, probably 10 on the rear, commonly referred to as 5/10 on 7.25" circle. When tubeless tires first came out in late '50's, they made 22.5 tubeless wheels with this pattern, they will hold up to 9 x 22.5" tires. Hard to find, found on farm trucks, among others, of the era.
Tubeless tires are worth considering because many tire shops will not or cannot deal with them.
Nice truck, do you know any history?
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
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