17" on a crx

I found some used rims for my crx. i will be going from 14" to 17", will i need to adjust my speedomoter?

you dont HAVE to, its only going to change by a couple mph.

If you get a tire that equals to the same total height as the stock rims, you will be ok. Go to google and search for "tire calculator" and you find a couple of sites help you determine the correct size. I have 18's on mine and do not have any problems.

This is an excellent site to compare sizes: http://www.1010tires.com/TireSizeCalculator.asp