I had a 2010 Dodge with 20" rims.

I bought two different sets of after-market rims.

I still have one set in storage.

My 2019 Dodge 2500 Big Horn has 18" rims. I think my 20" rims will fit the 2019.

The question is, how do I reprogram my speedometer for the 20" rims.

Can any mechanic shop do it, or will I have to go back to my dealer?