I know it's popped up before and I can't remember the answer. Do 15's clear the front calipers?
Thats exactly the reason why I went with 15" rims, not as blingy but you save a lot of money on tires. I purchased 5 MTRs from Discount Tire and got them for $210 each. The same tire for an 18" rim is $394 each. $1050 vs. $1970
When are you buying the Cragars? Those are the exact same rims I have but with the offset I want. I would like to see how they fit your VX when you get them installed.
Definitely no problems running 15" rims.