Wheel Size Change

[TahoeTX]

This may be a newbie question but if I upgrade to a larger wheel and tire size what do I need to do to make sure the speedometer reads accurately? Do we have interchangeable speedo gears?

 

[UofMZ71]

yes you will have to reprogram...

 

[blueflamed03]

it may be off slightly, depends on what your factory size is, and what you want to go too...

 

[UofMZ71]

try this...

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

 

[TahoeTX]

So if I get a new wheel and tire combo size that's larger or smaller than stock, how do I reprogram to calculate for the difference? Does it require a custom tune like BB or is it something I can do?

 

[blueflamed03]

would need to be custom programmed.

A BB tune fixes way more and adds way more power...something Id do regardless of wheel change

 

[UofMZ71]

would need to be custom programmed.

A BB tune fixes way more and adds way more power...something Id do regardless of wheel change

+1