2021 Subaru Ascent tire sizes
The 2021 Subaru Ascent came from the factory with 2 tire sizes on 18" to 20" wheels. The most common size is 245/60 R18. Pick your trim below.
2021 Ascent Base
Factory (OE) sizes
18"wheels
2021 Ascent Limited
Factory (OE) sizes
20"wheels
2021 Ascent Touring
Factory (OE) sizes
20"wheels
How to read 245/60 R18
- 245
- Tread width in millimetres
- 60
- Sidewall height, % of width
- R
- Radial construction
- 18
- Wheel diameter in inches
Overall diameter: about 29.6" · Sidewall: 147 mm