18" wheels vs 15" wheels

[navdoc101]

Question: I'm running 13" wheels vs 12". To get the correct miles traveled I multiply miles by 1.07. My son has a Tacoma with 18" wheels vs 16" stock. What does he need to multiply miles by to get correct miles traveled? They are 16" stock wheels not 15", sorry.

[Charlie1717]

Question: I'm running 13" wheels vs 12". To get the correct miles traveled I multiply miles by 1.07. My son has a Tacoma with 18" wheels vs 16" stock. What does he need to multiply miles by to get correct miles traveled? They are 16" stock wheels not 15", sorry.

It's the tires not the rims per say. It is about the overall rolling diameter of the tire.
Put in the stock tire size (not what your son currently has but what is stock out of the factory), then put in the new tire size he will be running and they will tell you the % difference.

http://www.miata.net/garage/tirecalc.html

[91mcnasty]

Charlies got this!!!!

[navdoc101]

Thanks ya'll!!!