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Discussion Starter · #22 ·
slammed1 said:
funny how a 275/60/20 is much skinnier than a 275/55/20 .........as side wall aspect ratio changes so will the width.
I know 2+2 = 4??? :rck:
 

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Have you actually measured? The 275 means the section width (not tread, but overall width) is 275 mm, which equates to 10.83". The tread section may be skinnier, but the overall width will be the same, otherwise the tires are missized.

The 60 v 55 is the aspect ratio, or the width of the sidewall compared to the section width. So a 275/60/20 would be 10.83" wide and 32.99" tall, where as a 275/55/20 would be 10.83" wide and 31.91" tall.
 

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I believe what slammed1 is saying is that yes they are the same width, however the 275/60 will have a slightly narrower footprint than the 275/55 because of its taller profile.

KB
 
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