Cadillac STS-V Spare Tire Sizes

The Cadillac STS-V has used a 6x115mm bolt pattern for all models from 2006 to 2009 along with tire diameters ranging from 27.0" to 27.7" tall. Using a temporary 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. Tire diameter as well as wheel diameter clearance have been taken into account for the specific Cadillac STS-V years and options. In this case, a 145/65R20 temporary spare tire is the recommendation for all applications.