Speedometer Change from 17" to 18 "wheels?

[97fatboy]

Speedometer Change from 17\" to 18 \"wheels?

Thinking of changing my stock 17" to 18" wheels. Will it change my speedometer reading? How much?

 

[ViperJoe]

Re: Speedometer Change from 17

Not to worry because the 18" tires are so close to the same diameter as the 17" (so long as you go with the "stock" 99+ size)

 

[Jack B]

Re: Speedometer Change from 17

It depends upon tire size and profile.

 

[Big Medicine]

Re: Speedometer Change from 17

I have a spreadsheet to plug wheel & tire info for delta ratio if you are interested. (gives % off)

 

[97fatboy]

Re: Speedometer Change from 17

I am running stock 17" the MXXS and going to the stock 18" with Pilots.

 

[GoldMan]

Re: Speedometer Change from 17

Tirerack.com gives overall diameter with their tire specs on their website... You should be able to find a 18" tire size that has about the same diameter as your 17".