Thanks for the replies guys, I appreciate you taking the time to answer.
I looked up those Fujimi sets and think I may have found something that will work.
And boy I ALWAYS forget about E-Bay, once I hit the ebay link and saw all those rims and tire's, it just looked a lot less confusing.
Whatever 1/24 scale 18 inch tire equates to is the slick tire I would need and some sort of center lock rim to match the tire size.
In real life I know they are staggered but for this project it works..