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2013-14 Shelby GT500
tire size question
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<blockquote data-quote="Smackiavelli" data-source="post: 13841985" data-attributes="member: 136903"><p>My new rims and tires are not yet on the Shelby - I don't know if any modification in my case will be necessary. Theoretically, you *shouldn't* have to make any modifications to fit the 20X11 Forgestars with MPSS 315s. There is, however, the possibility that you will have to relocate the bump stops. This hinges on how low your car sits and whether or not the rear end is well-centered. It is my understanding that, from car to car, there is some variability in how perfectly centered the rear end is from the factory. </p><p></p><p>Another factor is if you have correctly installed/adjusted panhard bars. In most cases, this suspension mod also aids in avoiding contact with the bump stops. Again, though, that is not a hard and fast rule (some GT500es with larger rims/tires and panhard bars installed still experience rubbing against the bump stops, although this most often occurs when the car is lowered more than 1.5"). The bottom line is that chances are good you can run MPSSes on the 20X11 Forgestars devoid any modification, but don't don't be surprised if it turns out that you must relocate the bump stops.</p><p></p><p>One other note: I went with offsets of +53 for the rears and +35 for the fronts. I recommend you do close to the same if this is the setup you end up choosing.</p></blockquote><p></p>
[QUOTE="Smackiavelli, post: 13841985, member: 136903"] My new rims and tires are not yet on the Shelby - I don't know if any modification in my case will be necessary. Theoretically, you *shouldn't* have to make any modifications to fit the 20X11 Forgestars with MPSS 315s. There is, however, the possibility that you will have to relocate the bump stops. This hinges on how low your car sits and whether or not the rear end is well-centered. It is my understanding that, from car to car, there is some variability in how perfectly centered the rear end is from the factory. Another factor is if you have correctly installed/adjusted panhard bars. In most cases, this suspension mod also aids in avoiding contact with the bump stops. Again, though, that is not a hard and fast rule (some GT500es with larger rims/tires and panhard bars installed still experience rubbing against the bump stops, although this most often occurs when the car is lowered more than 1.5"). The bottom line is that chances are good you can run MPSSes on the 20X11 Forgestars devoid any modification, but don't don't be surprised if it turns out that you must relocate the bump stops. One other note: I went with offsets of +53 for the rears and +35 for the fronts. I recommend you do close to the same if this is the setup you end up choosing. [/QUOTE]
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2013-14 Shelby GT500
tire size question
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