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Click on image for the lowdown. 
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| | | Forums66 Topics128,066 Posts1,055,876 Members48,428 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Mar 2004 Posts: 6,214 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,214 | Longbox55, You are correct, 22.5 tubeless wheels and tires were "standard" equipment starting in 1956, however many new trucks were still ordered with the 20" tube type tires. Many owners were not ready to switch over due to the availability of tube tires (that's what they had on the rest of the fleet). The 22.5 six lug are a lot harder to find than the 20" six lug. Mike B  | | |
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