Ferrari Testarossa Spare Tire Sizes

The Ferrari Testarossa has used a 5x108mm (5 x 4.25") bolt pattern for all models from 1985 to 1991 along with tire diameters ranging from 24.9" to 26.0" tall. Using a temporary spare tire with a diameter close to the standard tire has many benefits, especially for modern vehicle applications. Tire diameter as well as wheel diameter clearance have been taken into account for the specific Ferrari Testarossa years and options. In this case, a 155/70R17 temporary spare tire is the recommendation for all applications.