Mercury Grand Marquis Spare Tires

The Mercury Grand Marquis used a 5x4.5" (5x114.3 mm) bolt pattern for all models from 1979 to 2011 along with tire diameters ranging from 26.6" to 27.6" tall. Using a temporary compact spare tire with a diameter close to the standard tire has many benefits, especially for modern vehicles with larger brake calipers and anti-lock brakes or traction control systems.

The tire diameter and the wheel diameter clearance have been taken into account for the specific Mercury Grand Marquis years and options. In this case, 145/60R20 and 165/70R17 spare tire sizes are used to avoid vehicle components while closely matching the original tire size diameters. We've provided a breakdown by vehicle generation and model specifics to help you find the correct Mercury Grand Marquis spare tire.