Vehicle experienced a defective material reaction to an altered road surface in front driver's side rim. A set of raised subway tracks ran parallel with the road I was traveling on. As the road forked, I was forced to traverse the tracks in order to follow the appropriate road. As soon as the inside edge of front driver's side rim came in contact with the subway rail, the vehicle immediately "bottomed out". after bringing the vehicle to the side of the road I investigated the tire and rim and found no apparent damage. After completely removing the rim from the vehicle it was immediately apparent that the inside edge of the rim had caved in. The outer edge of the rim was undamaged, as was the tire itself, but the outer edge of the rim seemed to have collapsed in on itself. The impact of the vehicle bottoming out must have damaged the rotor and wheel studs because within 500 feet of installing the spare tire the studs themselves broke forcing me to have the vehicle flatbedded to the dealership. Dealership refused to repair vehicle as under warrantee claiming driver error. The lack of tire damage and signs of direct impact damage to outer rim, seems to indicate a weakened inner edge to the rim stemming from material defect failure/

- Framingham, MA, USA