2022 Subaru ascent tire sizes & fitment
Approved tire and wheel sizes for the 2022 Subaru Ascent, sourced from manufacturer fitment data and refreshed monthly.
Approved fitments
| Tire size | Rim size | PCD (bolt pattern) | Offset | Load index | Speed rating |
|---|---|---|---|---|---|
| 245/50R20 OEM | R20 | N/A | N/A | N/A | N/A |
| 245/60R18 OEM | 7.5x18 | N/A | 55mm | 105 | H |
| 245/50R20 OEM | 7.5x20 | N/A | 55mm | 102 | H |
| 245/55R19 | 7.5x19 | N/A | 55mm | 103 | H |
| 265/45R20 | 8x20 | N/A | 50mm | 102 | V |
| 245/60R18 OEM | R18 | N/A | N/A | N/A | N/A |
Best by use case
Four tires, four jobs
See the best tires for the Subaru Ascent, ranked by category →
Tire recalls & safety complaints for the Subaru Ascent →
Plus-size and winter-downsize options for every Subaru Ascent factory size →
Compatible alternative sizes for 245/50R20
Sizes within the ETRTO ±3% overall-diameter safe-fit tolerance. Each row links to the size's own page.
| Alternative size | %Δ OD | Category | Verdict |
|---|---|---|---|
275/40R21 |
0.05% | plus 1 | Safe |
225/60R19 |
-0.05% | winter narrower | Safe |
215/45R22 |
-0.09% | plus 2 | Safe |
245/45R21 |
0.12% | plus 1 | Safe |
245/55R19 |
-0.12% | alternative | Safe |
For the full list of alternatives with comfort/handling impact, see 245/50R20 upsize options. To check an arbitrary size pair, use the tire compatibility calculator.
Check a different size against this vehicle
Type any tire size below; we'll compute its overall-diameter delta against the OEM 245/50R20 and verdict using the ETRTO ±3% rule.
Common upgrade paths
- Plus-1: 275/40R21; one rim size up, 0.05% OD change. Sharper steering, mild ride penalty, modest cost premium.
- Plus-2: 215/45R22; two rim sizes up, -0.09% OD change. Noticeable ride penalty, higher pothole risk, meaningful tire-cost premium.
Use the plus-size calculator to evaluate any rim step against the OEM size.
How to choose tires for the 2022 subaru ascent
The 2022 Subaru Ascent ships from the factory on 245/50R20 tires mounted on R20 wheels. 4 approved fitments are documented for this model year, allowing some flexibility between performance, comfort, and winter compounds. The Compatible alternative sizes table above lists every safe substitution within the ETRTO ±3% overall-diameter tolerance.
Tire choice on the Subaru Ascent comes down to three trade-offs that matter more than brand loyalty: load index (must equal or exceed the OEM number), speed rating (must match or exceed the placard), and UTQG treadwear (higher means longer life, lower usually means stickier rubber). Owners replacing factory tires with the same compound class, for example all-season for all-season, generally see no change in ride characteristics or fuel economy. Switching categories (performance summer to all-season touring, for example) is where the trade-offs show up at the contact patch.
For 2022 Subaru Ascent owners considering a plus-size upgrade, the safer option is a Plus-1 step (one rim size up with a 10-point aspect drop and ~10 mm of additional section width). Plus-2 is technically viable on this chassis if the alternative-sizes table lists a Plus-2 candidate within tolerance, but expect a meaningful ride-harshness penalty and a tire-cost premium of 30–60% per tire relative to the OEM fitment. For winter use the recommended pattern is one width step down (e.g. from a 235 to a 225) with the aspect ratio bumped up to preserve overall diameter; narrower tires apply higher contact pressure per square inch on snow, which translates directly into shorter braking distances. The plus-size calculator evaluates any specific rim step against this OEM size.
Before purchasing, verify the tire size on the driver-door placard of your specific 2022 Subaru Ascent, since trim levels and option packages can shift the original fitment from what is documented here. The placard reading is the authoritative source per FMVSS 110, and dealers will reference the placard rather than aftermarket catalogs when validating warranty claims.
NHTSA-reported issues for 2022 subaru ascent
Top issue category: Sidewall
Reported across: 2022 – 2022 (1 year)
What owners described
Blowout or sudden deflation appears in 31% of these reports; about 1.5× as often as across all tire complaints. Percentages are shares of the 13 reports covering every model year of the Subaru Ascent that include a written account; a single report can describe more than one problem, so they do not total 100%.
| Reported problem | This subject | All tire complaints | Relative |
|---|---|---|---|
| Blowout or sudden deflation | 31% | 20% | 1.5× |
| Sidewall failure | 31% | 15% | 2.1× |
| Loss of control, rollover or collision | 8% | 8% | 0.9× |
| Pressure-monitoring (TPMS) fault | 8% | 2% | 3.2× |
Mileage at failure
9 of these reports state an odometer reading. The middle report is at 11,200 miles, with 8 in 10 falling between 2,000 and 38,000 miles.
In owners' own words
Verbatim excerpts from complaints filed with NHTSA about Subaru Ascent. Reports are published by NHTSA as filed and are lightly cleaned here only to remove intake codes.
245/50 A20. Side wall ruptured at 55 mph. A pop and tire was flat. No sensor warning. Correct tire pressure. Immediately checked electronic psi reading. All tires ok but red 0 for tire that blew out. I have pictures. Not confirmed by any one yet. That may happen Thursday when I replace all 4 tires. Had 7780 miles on tires. Even tread wear.
The contact owns a 2019 Subaru Ascent. The contact stated while driving 70 MPH, the hood was flapping up and down. The contact was concerned that the hood might release and crash into the front windshield. The brake pedal was depressed but was slow to respond. The TPMS warning light was illuminated. The contact stated that the interior lights were inoperable. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure. The vehicle was not repaired. The contact stated that the vehicle was previously taken to the same dealer for routine maintenance, and the brake fluid and coolant were not topped off. The manufacturer was not contacted. The failure mileage was approximately 79,000.
I own a 2025 Subaru Ascent Limited. At approximately 20,000 miles, one of the original tires (factory-installed) developed a straight split along the tread/shoulder area. The cut was very straight, almost like along a seam, and I could see metal/steel cords exposed through the opening. There was no major impact, curb strike, or pothole event that I'm aware of, and there was no obvious sidewall or wheel damage. The Subaru dealer inspected the tire and replaced it, but I do not have the tire in my possession, so I no longer have the exact tire brand/model or DOT number. I have photos of the damage and a repair order from the dealer showing the tire replacement. I have also reported this incident to Subaru's customer advocate department because I am concerned this may be a safety-related tire or manufacturing issue on a relatively new vehicle with low mileage.
Tire blew out at 70 mph on interstate with no warning and no debris on roadway. (245/50R20). Police officer aided us after we changed the spare to re-enter interstate safely due to high traffic speed. Beginning of a road trip so bought a new tire when we found a town & shop disposed of destroyed tire though we do have a photo. Heavy traffic and difficult to get to shoulder safely as vehicle began fishtailing as we maneuvered onto the gravel shoulder. Extremely frightening. Had to put spare on next to cars flying by just next to the rear passenger tire that blew. Vehicle only 3 months old and with less than 10k miles.
Complaints are voluntarily submitted to the NHTSA Office of Defects Investigation and are not verified by NHTSA; they represent owner-reported problems, not proven defects. Counts can be useful as a relative quality signal across comparable tires or vehicles.
Frequently asked questions
What size tires fit a 2022 Subaru Ascent?
Can I run a different tire size on my 2022 Subaru Ascent?
Where can I buy tires for my 2022 Subaru Ascent?
What is the recommended tire pressure for the 2022 Subaru Ascent?
Can I fit winter tires in a different size on my 2022 Subaru Ascent?
How often should I rotate the tires on my 2022 Subaru Ascent?
For broader tire questions; replacement timing, UTQG, EV-specific tires, winter swaps; see the tire FAQ.
Sources for this page
- Vehicle owner's manual tire & wheel placard; door-jamb placard on the Subaru Ascent is the authoritative source for OEM tire size, load index, and cold-inflation pressure for your specific trim.
- NHTSA SaferCar; recall lookup for the 2022 Subaru Ascent.
- ETRTO 2024 Standards Manual §2.3; overall-diameter math used for the alternative-size verdicts above.
- Tire & Rim Association 2025 Yearbook; load-index to maximum-load reference.
Last verified 2026-10-07.