Re: 17.5" wheel option? For 1000, 1500, or 2500? Mainly 4WD?
The last year of the 17.5 wheel was 1968 . For GMC 1/2 ton the wheel was more common on 4x4 trucks. Still quite rare but was available on all model 1000 2 wheel drive trucks and 1500 and 2500 series trucks. I recently purchased a set off an original 1966 short bed stepside that had the wheels on the spid sheet. The 17.5 wheels are 1955-1959 then the center hub profile changed 1960-1968 for both 6 lug and 8 lug .
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