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Joe Dillard

· Electric Chair Operator
'91 YJ
Joined
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14,982 Posts
Discussion starter · #1 ·
I was searching for some tires and came across this nice tire size comparison calculator.

It calculates differences between diameter, width, circumference, sidewall height and revolutions per mile. Just plug-in the two sizes & click calculate to see the results in differences and percentages.

It calculates speedometer differences, and gear ratio differences for 65mph.

It also shows side-by-side and overlay comparisons to toggle thru.

Anyway, I was kind of bored so I thought I'd post this in case others are bored or hadn't seen it.

One thing to remember - manufacturers often sell tires who's size is not actually correct. They are commonly smaller overall. The margin varies.

https://www.tacomaworld.com/tirecalc?tires=31-10.5r15-33-12.5r15
 
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