Rim Swap diff size

[PolizeiFritz]

I have a 1999 explorer sport parts truck that has a nice set of stock 16 inch rims on some decent tires. My daily driver is a 2000 but runs on 15s. Would it be a big deal if I swapped them and how much variance can I expect in the speedo?

 

[1998Explodasport]

I have a 1999 explorer sport parts truck that has a nice set of stock 16 inch rims on some decent tires. My daily driver is a 2000 but runs on 15s. Would it be a big deal if I swapped them and how much variance can I expect in the speedo?

I don't think the 2000 Explorers came with 15in. wheels.

 

[1998Explodasport]

What will affect your speedo will depend on what size tires you're using.

 

[PolizeiFritz]

I don't think the 2000 Explorers came with 15in. wheels.

Mine did. Even has it listed in the doorjam at 15 inch.

 

[PolizeiFritz]

P235/75R15 on my driver, 255/70-16 on the parts truck. Will this be a huge diff?

 

[PolizeiFritz]

I just found out it would be a 4.1% diff

What I should ask is....is there a part I should be swapping between the trucks when I swap the tires?