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.


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