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Old 07-26-2015, 09:07 AM   #7
special-K
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Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,851
Re: Pic Request: 10-16.5 vs 9.50-16.5 tires

Back in the bias py days the aspect ratio was not standardized, only width. Tire height could vary between designs, but they were generally a similar diameter. 12.00s were 32" back then and it wasn't till BFG radials that they became 33/12.50s. The difference between 9.50s and 10.00s is bigger than it sounds. The 10.00 was an obviously larger tire, even if the section width was only 1/2" different. 16.5s came out when the trend came about for wider track "Wide Oval" tires, while the 16s remined a tradition tall narrow truck tire.

Here is a picture of a 10.00 x 16.5 mounted on an 8.25" wheel:
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