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Will Installing Curt # C15703 on 2006 Silverado 2500HD Interfere with Larger than Stock Spare Tire


2006 Silverado 2500HD, Duramax, LT265/75/R16 spare tire. How much room will be between this hitch and the rear differential? My tires are about one inch bigger in diameter than stock. There is a few inches of space in my current arrangement with the stock hitch.


Helpful Expert Reply:

Curt does not have that measurement available, but you can determine this for yourself by taking some measurements from the underside of your truck.

Using the diagram I edited for you, locate the weldnut that would serve as the rear-most attachment point for the hitch. From the center of this bolt hole, measure rearward toward the bumper six inches. From that point, measure forward to the closest point of the differential. If this distance is greater than the diameter of your spare tire, then the spare tire would fit without interference from the hitch.

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helpful expert reply by:
Mike L

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