2023 Audi a5 tire sizes & fitment
Approved tire and wheel sizes for the 2023 Audi A5, sourced from manufacturer fitment data and refreshed monthly.
Approved fitments
| Tire size | Rim size | PCD (bolt pattern) | Offset | Load index | Speed rating |
|---|---|---|---|---|---|
| 245/40R18 OEM | R18 | N/A | N/A | N/A | N/A |
| 255/35R19 OEM | R19 | N/A | N/A | N/A | N/A |
Best by use case
Four tires, four jobs
Best all-season
Bridgestone
Turanza QuietTrack
all-season touring, UTQG 800, 80,000-mi warranty
Best budget
Bridgestone
Turanza QuietTrack
Lowest cost per mile in this size; UTQG 800
Best quiet
Bridgestone
Turanza QuietTrack
68 dB cabin noise (EU label); quietest in this size
Best winter
Bridgestone
Blizzak WS90
Dedicated winter (premium compound); ice/snow grip
See the best tires for the Audi A5, ranked by category →
Tire recalls & safety complaints for the Audi A5 →
Plus-size and winter-downsize options for every Audi A5 factory size →
Compatible alternative sizes for 245/40R18
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 |
|---|---|---|---|
225/55R16 |
0.11% | alternative | Safe |
275/45R16 |
0.11% | alternative | Safe |
245/35R19 |
0.14% | plus 1 | Safe |
245/45R17 |
-0.14% | alternative | Safe |
215/40R19 |
0.21% | plus 1 | Safe |
For the full list of alternatives with comfort/handling impact, see 245/40R18 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 245/40R18 and verdict using the ETRTO ±3% rule.
Common upgrade paths
- Plus-1: 245/35R19; one rim size up, 0.14% OD change. Sharper steering, mild ride penalty, modest cost premium.
- Plus-2: 245/30R20; two rim sizes up, 0.28% 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 2023 audi a5
The 2023 Audi A5 ships from the factory on 245/40R18 tires mounted on R18 wheels. 2 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 Audi A5 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 2023 Audi A5 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 2023 Audi A5, 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 2023 audi a5
Top issue category: Tires (General)
Most reported: Tires (General) (6) · Tread / Belt (2)
Reported across: 2023 – 2023 (1 year)
What owners described
Tread or belt separation appears in 33% of these reports; about 2.5× as often as across all tire complaints. Percentages are shares of the 9 reports covering every model year of the Audi A5 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 |
|---|---|---|---|
| Tread or belt separation | 33% | 13% | 2.5× |
| Blowout or sudden deflation | 22% | 20% | 1.1× |
| Sidewall failure | 11% | 15% | 0.7× |
| Loss of control, rollover or collision | 11% | 8% | 1.3× |
In owners' own words
Verbatim excerpts from complaints filed with NHTSA about Audi A5. Reports are published by NHTSA as filed and are lightly cleaned here only to remove intake codes.
THE TIRE TREAD SEPARATED COMPLETELY FROM THE SIDEWALLS, ON BOTH SIDES. THERE WAS NO INDICATION OF ANY ISSUES, LOW PRESSURE, PULLING ETC. I WAS DRIVING ON THE HIGHWAY, CAR DRIVING NORMAL. I STARTED TO HEAR A PULSATING VIBRATION SOUND LIKE A WHEEL BEARING. I LET OFF THE GAS TO SLOW DOWN A BIT AND LISTEN, THEN THERE WAS SOME LOUD NOISES, I PULLED OVER TO FIND THE TREAD HAD SEPARATED COMPLETELY ALL THE WAY AROUND.
The front tires started to come apart (tread separating from belt). I purchased new tires and had a shop install them. Some time later, after I had replaced the tires, I received a recall notice from Audi/Continental Tire for this exact issue. The notice (NHTSA Recall ID 24T009) stated to contact continental for reimbursement. I have contacted Continental Tire via telephone. They instructed me to submit pictures of the tires and receipts via their website. I did so on 11/14/2024, 12/5 and 1/14. I have only received automated validations of receipt. Continental Tire has not responded and will not address the issue. I have attached the documents sent to Continental Tire.
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 2023 Audi A5?
Can I run a different tire size on my 2023 Audi A5?
Where can I buy tires for my 2023 Audi A5?
What is the recommended tire pressure for the 2023 Audi A5?
Can I fit winter tires in a different size on my 2023 Audi A5?
How often should I rotate the tires on my 2023 Audi A5?
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 Audi A5 is the authoritative source for OEM tire size, load index, and cold-inflation pressure for your specific trim.
- NHTSA SaferCar; recall lookup for the 2023 Audi A5.
- 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.