Subaru WRX STI Spare Tire

The Subaru WRX STI is equipped with a temporary T135/70D18 spare tire, which is a compact spare also known as a "donut". The spare is designed to take up less space, making it easy to store in the trunk of the vehicle. However, it is intended for temporary use only, designed to get you to a service station or home after a flat and should not be driven at high speeds or long distances. As a smaller sized tire -135 width, 70 aspect ratio, 18 inches in diameter - it requires a higher inflation pressure than a standard tire, typically between 60-70 psi. By providing a spare, Subaru ensures you are never left stranded due to a tire-related mishap while driving your WRX STI. Despite its compact size and temporary function, it's a crucial aspect of the vehicle's safety system.

Subaru WRX STI models manufactured from 2015 to 2021 have tires with overall diameter ranging from 25.7" to 26.3", allowing the use of a temporary spare tire with a near same diameter as the OEM tire. Tire diameter and wheel diameter clearance have been taken into account for the specific Subaru WRX STI years and trims.

Listed below are compact spare tire sizes that can fit some Subaru WRX STI vehicles based on acceptable tire diameter range of 24.9" to 27.1". Some WRX STI models may require the use of a traditional full-size tire as a spare. To ensure safe temporary mobility in case of a road emergency, always refer to the vehicle owner's manual for the correct Subaru WRX STI spare tire size designated by vehicle's manufacturer.

Spare Size	Spare Diameter
T145/60R20from $271.36	26.9"
T155/70R18from $178.60	26.6"
T155/70D17from $175.43	25.6"
T155/60R18from $164.19	25.3"
T135/90R17from $158.19	26.6"
T135/90R16from $155.20	25.6"
T135/70R19from $147.99	26.5"
T155/70R17from $139.76	25.6"
T135/70D18from $135.05	25.5"
T135/80R17from $133.66	25.5"
T135/70R18from $131.66	25.5"
T135/80R18from $125.96	26.5"
T145/70D17from $120.99	25"
T145/70D18from $118.97	26"
T115/95R17from $117.54	25.6"
T135/80D17from $112.58	25.5"
T155/80D17from $97.90	26.8"
T155/90D16from $92.99	27"
T145/90D16from $88.99	26.3"
T145/80D17from $81.99	26.1"
T155/70D18	26.6"
T155/80D16	25.7"
T155/80R16	25.7"
T155/80R17	26.8"
T155/90R16	27"
T165/70D17	26.1"
T165/70R17	26.1"
T185/55D18	26"
T185/55R18	26"
T185/60D17	25.7"
T185/60R17	25.7"
T145/90R16	26.3"
T145/80R17	26.1"
T145/80R16	25.1"
T145/70R17	25"
T135/60D19	25.4"
T135/60R19	25.4"
T135/80D18	26.5"
T135/90D16	25.6"
T135/90D17	26.6"
T145/65D18	25.4"
T145/65R18	25.4"
T145/70R18	26"
T145/80D16	25.1"
T125/70R19	25.9"

Spare Tire for Subaru WRX STI

Discover spare tire solutions for your Subaru WRX STI based on model year. Generally, spare tire size has to be within 3% of the overall diameter of the original equipment tire size. Subaru WRX STI tire size can vary depending on the year and trim. Make sure to check the load index and load capacity of the spare tire to ensure that it is capable to safely support your vehicle's weight.

All listed guides, data and/or calculations are for informational purposes only. Spare-Tires.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information. Always refer to vehicle owner's manual for the correct spare tire size configuration.