Subaru B9 Spare Tire Sizes
The Subaru B9 has used a 5x114mm (5 x 4.5") bolt pattern for all models from 2006 to 2007 along with a tire diameter of 29.0" 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 Subaru B9 spare tire selections. In this case, a 155/85R18 temporary spare tire is the recommendation for all applications.