The configuration of lug studs or bolts on a vehicle’s wheel hub is a critical specification. This specification determines compatibility between the vehicle and its wheels. For the specified vehicle model year, the measurement is 5×139.7mm (or 5×5.5 inches). This indicates a five-lug design with a circle diameter of 139.7 millimeters or 5.5 inches.
Correct wheel fitment is essential for safety and performance. Using wheels with an incorrect specification can lead to vibration, stress on the wheel bearings and studs, and potential wheel detachment. This measurement has remained consistent for many RAM 1500 models, reflecting a design continuity and aftermarket support for wheels and tires. Ignoring these specifications can result in significant damage to the vehicle and jeopardize passenger safety.