Factory 18 and 20

[HydrogenCyanide]

I have a Sierra SLT that came with the 18 inch polished aluminum rims. I just purchased the 20 inch chrome rims on ebay that should be delivered next week. My plan is to run the 18's in the winter and the 20's in the summer.

 

Question- Do I need to do anything to adjust my speedometer? Is there anything I need to do aside from swap the wheels?

 

Ps. Both sets will have their own tpms installed

[Big_D]

if you're running factory sizes of both tires you won't have to change anything. overall tire height is what changes the speedo.

 

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

[TJay74]

As long as you run the exact stock size you are fine, you will have to sync the TPMS after each swap out.