I just got some 20" Foose Nitrous wheels with Nitto tires. My question is, what do I need in order to have the speedometer read correctly after the swap? A tune possibly? I have also seen the speedo kits for when you change gear ratios, but not sure if you use the same part when changing tire sizes.

 

i believe you would have to get a tune to fix the speedo

 

If you ordered the right size tires you will be so close to stock size that your speedo will only be off like .3 MPH.