18" Wheels on a 66' Cuda - Advice

Jzaid 84 ,I am almost positive the most important thing is overall Diameter and B.S. of any wheel Tire combo. If you calculate from all of the '66 Barracudas here on Tire Specs. (cross section and total ROLLING Dia.and remember the cross section of the Tire can be WIDER than the Rim). The Rim Dia. should not be a problem. It is all part of the equation. Hope that helps. Tire Rack has a Spread Sheet with all of this info. Tim
:thumblef: