Solo Rules for stock class section:
Any type wheel may be used provided it complies with the following: it
is the same width and diameter as standard, and as installed (including
wheel spacers if applicable) it does not have an offset more than
+/- 0.25 inch from a standard wheel for the car. The resultant change in
track dimensions is allowed.
So for Mustangs equipped with 19 inch rims can they be changed for 18 inch rims of same width?
Here is the dilemma - '12 Boss 302 is equipped with 19x9 front and 19x9.5 rear rims.
18x9 rims are an option on '12 Mustang GT, but you can't order a Boss with 18 inch rims? by "standard wheel for the car" does it mean Mustangs in general or specific option packages?
Reason for question; Hoosier only has a 9.6" wide tire for 19x9, 19x9.5 rims, but has a 10.3' wide tire for an 18x9 rim. I would like to run the cheaper and wider tire on all four corners of the car.