Subaru tire pressures
Subaru Ascent tire pressure
The cold tire pressures Subaru prints in its owner's manuals for each Ascent tire size, by generation. Find your tire size on the sidewall, then read across.
Ascent tire pressures by generation
Ascent (1st gen) (2019 on)
| Tire size | Front / Rear | Source | |
|---|---|---|---|
| 245/60R18 105H18 x 7 1/2J wheel | 35 psi240 kPa | 35 psi240 kPa | Owner's manualSource |
| 245/50R20 102H20 x 7 1/2J wheel | 33 psi230 kPa | 33 psi230 kPa | Owner's manualSource |
Spare tire: T165/90 D18 — 60 psi (420 kPa) Owner's manualSource
Notes from the owner's manuals
- 245/60R18 105H: Same figures in the 2019 (U27), 2021 (U24), 2023 (U25) and 2025 (U26) manuals. The manual also prints kgf/cm2 (not bar); bar left null rather than converted.
- 245/50R20 102H: Same figures in the 2019, 2021, 2023 and 2025 manuals. The manual also prints kgf/cm2 (not bar); bar left null rather than converted.
What the owner's manuals don't say
- Editions read: 2019, 2021, 2023, 2025.
Figures marked "Owner's manual" link to the maker's own document. "Reported" figures are the maker's, read from a copy we could not get from the maker directly. A figure marked ≈ has been converted from the unit the manual prints. Nothing here has been checked against your vehicle: if it disagrees with the placard on the door jamb, the placard wins.
Check your own vehicle by VIN
Tire pressure questions
What should the tire pressure be on a Subaru Ascent?
It depends on the tire size. For the sizes Subaru lists, the cold pressure is 33–35 psi at the front and 33–35 psi at the rear. Find your size in the tables above, and check the tires cold.
What size tires does a Subaru Ascent take?
Subaru fitted the Ascent with 245/60 R18 and 245/50 R20, depending on the model year and trim. The size is printed on the side of your tire; the pressures above are listed by size.
Where is the tire pressure placard on a Subaru Ascent?
On the driver's door jamb — the Tire and Loading Information placard. It gives the same cold pressures as the owner's manual, which is where the figures on this page come from; if the two ever disagree, go by the placard on your vehicle.