Subaru Ascent Spare Tire Fitment Guide
The Subaru Ascent used a 5x4.5" (5x114.3 mm) bolt pattern for all models from 2018 to 2026 along with a tire diameter of 29.6" tall. Using a temporary compact 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.
The tire diameter and the wheel diameter clearance have been taken into account for Subaru Ascent spare tire selections. In this case, a 155/90R18 temporary spare tire is the recommendation for all applications. We've provided a breakdown by vehicle generation and model specifics to help you find the correct Subaru Ascent spare tire.
2018-2026 Subaru Ascent Spare Tires
This generation of the Subaru Ascent began in 2018 and is still the current model being produced. All the models for these years use the same spare tire and wheel solution.
There was a facelift redesign in 2023 that changed the appearance, but it does not affect the spare tire recommendation.
| Year | Make | Model | Bolt Pattern | Tire Diameters | Recommended Spare Tire |
|---|---|---|---|---|---|
| 2026 | Subaru | Ascent | 5x4.5" (114.3 mm) | 29.6" | 155/90R18 | 29.0" |
| 2025 | Subaru | Ascent | 5x4.5" (114.3 mm) | 29.6" | 155/90R18 | 29.0" |
| 2024 | Subaru | Ascent | 5x4.5" (114.3 mm) | 29.6" | 155/90R18 | 29.0" |
| 2023 | Subaru | Ascent | 5x4.5" (114.3 mm) | 29.6" | 155/90R18 | 29.0" |
| 2022 | Subaru | Ascent | 5x4.5" (114.3 mm) | 29.6" | 155/90R18 | 29.0" |
| 2021 | Subaru | Ascent | 5x4.5" (114.3 mm) | 29.6" | 155/90R18 | 29.0" |
| 2020 | Subaru | Ascent | 5x4.5" (114.3 mm) | 29.6" | 155/90R18 | 29.0" |
| 2019 | Subaru | Ascent | 5x4.5" (114.3 mm) | 29.6" | 155/90R18 | 29.0" |