| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Early tubeless tires on late '50's farm trucks(GM) had that same bolt pattern(10 on 7.25) while rare, can be used on your truck. They are 22.5" which replace 20" tires.
'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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