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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!
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| | | | Joined: Jan 2000 Posts: 175 Shop Shark | | Shop Shark Joined: Jan 2000 Posts: 175 | Does anyone know of an info source or database that will tell me what size tires are able to fit on my ’97 GMC Z-71 ½ ton pickup? I currently have 265/75-16’s on it now but was thinking of upgrading to 285/75-16’s soon because mine are almost worn out. According to the online tire size calculator we’re only talking about a 1-1/2 inch difference in diameter but sometimes in real life it makes a difference.
Gravity - It's not just a good idea, it's the law.
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | When you change tire sizes on one of these you need to have the computor programed for it. 
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: May 2003 Posts: 328 Shop Shark | | Shop Shark Joined: May 2003 Posts: 328 | With 285s you will have to tighten the torsion bars to lift the front a little. Otherwise, they will rub.
Never hold your farts in. They travel up your spine and into your brain...that is where crappy ideas come from.
| | | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | bill, you might try 1010tires.com. i think it has a plus size calculator. ron
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
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