2018 Subaru Outback Spare Tire
The Subaru Outback comes equipped with a temporary spare tire, often referred to as a "doughnut," which is stored in the vehicle's underfloor storage compartment in the back. This spare tire is not intended to match the regular tires in terms of size or performance, but to provide a temporary solution for reaching a safe location or tire repair shop in case of a tire emergency. The exact size can vary depending on the model and year of the Outback, but typically, it is smaller than the regular tires. For example, the 2020 Subaru Outback uses a T145/80D17 temporary spare tire. It's significant to note that the Outback's spare tire should only be used in emergencies and replaced with a regular tire as soon as possible, as it is not designed for extensive driving or high speeds.
2018 Subaru Outback comes with 2 OEM tire size options. Select the original equipment the tire size installed on your vehicle to see all spare tires that have roughly the same tire diameter and can be used as a temporary replacement in the event of a flat tire. Remember that load carrying capacity of the spare tire must be the same or higher than the load carrying capacity of the original equipment tires in order to safely support the weight of your vehicle. Refer to vehicle owner's manual or contact Subaru dealership to confirm the correct 2018 Subaru Outback spare tire size.
225/60R18
225/60R18 tire has a diameter of 28.6". These temporary spare tires fit the acceptable tire diameter range of 27.7" to 29.5".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T155/85D18from $185.43 | 28.4" | -0.7% |
| T145/80R19from $183.34 | 28.1" | -1.7% |
| T155/80R19from $173.33 | 28.8" | 0.7% |
| T155/90D18from $163.99 | 29" | 1.4% |
| T155/90R18from $134.96 | 29" | 1.4% |
| T165/90R17from $119.99 | 28.7" | 0.3% |
| T155/90D17from $114.99 | 28" | -2.1% |
| T165/90D17from $109.43 | 28.7" | 0.3% |
| T175/90D17 | 29.4" | 2.8% |
| T175/80R18 | 29" | 1.4% |
| T175/80D18 | 29" | 1.4% |
| T165/60R20 | 27.8" | -2.8% |
| T155/90R17 | 28" | -2.1% |
| T155/80R18 | 27.8" | -2.8% |
| T155/80D19 | 28.8" | 0.7% |
| T155/80D18 | 27.8" | -2.8% |
| T145/80R20 | 29.1" | 1.7% |
| T175/90R17 | 29.4" | 2.8% |
225/65R17
225/65R17 tire has a diameter of 28.5". These temporary spare tires fit the acceptable tire diameter range of 27.6" to 29.4".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T155/85D18from $185.43 | 28.4" | -0.4% |
| T145/80R19from $183.34 | 28.1" | -1.4% |
| T155/80R19from $173.33 | 28.8" | 1.1% |
| T155/90D18from $163.99 | 29" | 1.8% |
| T155/90R18from $134.96 | 29" | 1.8% |
| T165/90R17from $119.99 | 28.7" | 0.7% |
| T145/85R18from $118.73 | 27.7" | -2.8% |
| T155/90D17from $114.99 | 28" | -1.8% |
| T165/90D17from $109.43 | 28.7" | 0.7% |
| T175/80D18 | 29" | 1.8% |
| T165/60R20 | 27.8" | -2.5% |
| T155/90R17 | 28" | -1.8% |
| T155/80R18 | 27.8" | -2.5% |
| T155/80D19 | 28.8" | 1.1% |
| T155/80D18 | 27.8" | -2.5% |
| T145/80R20 | 29.1" | 2.1% |
| T175/80R18 | 29" | 1.8% |
More Subaru Outback Spare Tires
- 2025 Subaru Outback Spare Tire
- 2024 Subaru Outback Spare Tire
- 2023 Subaru Outback Spare Tire
- 2022 Subaru Outback Spare Tire
- 2021 Subaru Outback Spare Tire
- 2020 Subaru Outback Spare Tire
- 2019 Subaru Outback Spare Tire
- 2017 Subaru Outback Spare Tire
- 2016 Subaru Outback Spare Tire
- 2015 Subaru Outback Spare Tire
- 2014 Subaru Outback Spare Tire
- 2013 Subaru Outback Spare Tire
- 2012 Subaru Outback Spare Tire
- 2011 Subaru Outback Spare Tire
- 2010 Subaru Outback Spare Tire
- 2009 Subaru Outback Spare Tire
- 2008 Subaru Outback Spare Tire
- 2007 Subaru Outback Spare Tire
- 2006 Subaru Outback Spare Tire
- 2005 Subaru Outback Spare Tire
- 2004 Subaru Outback Spare Tire
- 2003 Subaru Outback Spare Tire
- 2002 Subaru Outback Spare Tire
- 2001 Subaru Outback Spare Tire
- 2000 Subaru Outback Spare Tire
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.