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Limitations As with any performance product, there are some compromises to achieve bolt-on status. In the case of this system, wheel backspacing is limited, depending on tire size. The following numbers allow approx. 1/4" of clearance between the rim and tie rod end...
14" rim - 3.25" backspace maximum
15" rim - 3.25" backspace maximum
17" rim 5.75" backspace maximum
18"+ rim 6+ backspace
Note - a 17" rim clears the tie rod end entirely, however with more than 5.75" backspacing, the rim may hit the tie rod at full lock in either direction. If wider 17" rims are needed, an adjustable stop may be welded to the lower a-arm to limit turning radius. These figures are based on suspension clearance only.
Theres no guarantee that a wider 17" rim, or the tires, will clear the frame rails or other parts of the car. Large wheels and tires typically require clearancing in other areas as well, and it is the owners responsibility to determine the requirements of his/her particular situation.
As always, we're always happy to help or answer any questions you might have.
