Mirage - Lancer - Colt - Summit Performance!

 


(
Home)

Mirage Forum

Chat Room

Featured Cars

Tuning Info

Links

Regional Sites

Mirage Lancer
Colt Summit
Info


Maintenance
Info


Mirage
Performance
Online Banners


Site and
Mirage1 Info


 

- This old site is maintained for historic and technical reasons -

Calculating Tire Diameters


(Quoted from Michael Kaczmar and the DSM archives)

    Here is the way to figure tire diameters:


Section width x one tenth of the aspect ratio. Think of the aspect ratio as a percentage. This will give you the wall thickness in milimeters. Change that number to inches, by dividing by 25.4 and then muntiply by 2 and add the rim diameter. This should give you the theoretical tire diameter.


For example:

195/50-15 - 195 x 50% (or 0.5) ... 195 x 0.5 = 97.5mm. Multiply x 2 (you have two wall thicknesses in the overall diamter = 195mm. Convert to inches: 195/25.4 = 7.677".

Add this to your wheel diameter: 15 + 7.677 = 22.677 ... For government accuracy you are looking at a 22 - 5/8" tire diameter.


Back to Tuning
   
 
© 2000+ Mirage Performance Online