Wheels any larger than 16" on any 65-68 mustang...they are too big for the smaller mustangs...they look cartoonish...most people wont agree with that... but its what my eyes tell me.
I agree 100% But I have 17's because I autocross.
17" and larger wheels (they are NOT rims) on a Vintage Mustang is my biggest pet peeve and I have never been ashamed to express that on this forum. It is all in the shape of the wheel well openings. The early Mustangs' are somewhat teardrop shaped and the late models' are inverted U shaped. The larger wheels and tires with no sidewalls look like crap on a Vintage Mustang.
And long live the TTD wheel! There is nothing else that looks that good on a Mustang.