16" rim (what size is best for slicks/Dr's?)
 

I have 2 16" 300zx rims.
What size would be best for drag radial?
What size would be best for slicks?

Thanks

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About 26.68 inches. You can alter tire height to give you an effective gear ratio. Depends on what gear and RPM you want to cross the finish line. See: http://www.izook.com/gearcalc.htm.

Here are some recommended wheel sizes: http://www.hoosiertire.com/specdrag.htm

Always happy to help. If you have other questions please do not hesitate to waste my time.