My autocross tires are mounted on 15 inch Mustang "turbine" style rims from the 1980's. As Cobrakidz says the bolt pattern is the same as the Tiger's. They are 7 inch rims and I do need to use a 3 mm spacer in the front for clearance, but the backs fit up fine without one. They are drilled for 1/2 inch studs, so getting the wheel centered on our 7/16 studs is a bit of a trial. I made a temporary spacer to slide over two of the studs to take up the slack until I can get the nuts started, centered and snug on the other two. I use the nuts that came with my VTO regular wheels that are fat enough for using their wheels mounted on a 7/16 stud. I think those wheels are drilled for 1/2 or 5/8 studs.
Just remember that the Mustang wheels have 7 inch rims and thus are too wide to fit under the false floor of the trunk as a spare.
I understand there is a temporary "donut" type spare that is out there that will fit under the false floor, but have no specifics. I just keep an original rim wheel with a somewhat new 13 inch tire and a bag of original lug nuts in the trunk.
Gene
