speedo adjustment.

[pyrojim]

I posted this in wheels and tires as well, wasn't sure where to go with it.
My Dart is running 15" wheels, it came with 14"s. Any idea how to get the speedo adjusted to read correctly and still keep the 15"s????
Thanks

 

[Rocky_JS]

here this might help you find the answer you seek. it is more on rear gear ratio, tire height and not wheel size.

http://enthusiast.yearone.com/faqs/transmission/mopar-speedo-gear-chart/

 

[6pk2goDemon]

Here's another chart