2012 Audi Q7 — 3.0 TDI Prestige
The 2012 Audi Q7 3.0 TDI Prestige shipped with 2 different factory tire sizes, depending on the wheel package it left the factory with (this can also reflect a staggered front/rear setup). Check your tire sidewall or door placard to confirm which one applies to your vehicle.
This trim shipped with more than one tire size (staggered fitment, front/rear, or optional wheel package). Confirm which one matches your vehicle by checking your tire sidewall or door placard.
275/45R20
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 45% (123.8 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~29.7" |
| Revolutions per mile | ~678 |
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295/35R21
| Section width | 295 mm |
|---|---|
| Aspect ratio (sidewall height) | 35% (103.3 mm) |
| Rim diameter | 21" |
| Overall tire diameter | ~29.1" |
| Revolutions per mile | ~692 |
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What this size means for your Audi Q7
On the 2012 Audi Q7 3.0 TDI Prestige, the factory 275/45R20 measures about 29.7″ in overall diameter with a 123.8 mm (4.9″) sidewall, and completes roughly 678 revolutions per mile. Its 45-series aspect ratio gives a low-profile sidewall tuned for sharper handling, common on sport trims and larger-wheel packages. In tire terms it is a large-diameter fitment.
The 275/45R20 and 295/35R21 differ in both width and overall diameter (0.6″, 2.1%), which usually means a staggered front/rear setup — the two sizes are not interchangeable side to side, so match each to its correct axle.
Other 2012 Audi Q7 trims
- 3.0 TDI Premium 265/50R19
- 3.0 TDI Premium Plus 265/50R19 / 275/45R20
- 3.0 TDI S-Line 275/45R20 / 295/35R21
- 3.0T Premium 255/55R18 / 265/50R19
- 3.0T Premium Plus 255/55R18 / 265/50R19 / 275/45R20
- 3.0T S-Line Prestige 275/45R20 / 295/35R21
Audi Q7 tire sizes by year
- 2026 Audi Q7 255/55R19 / 285/45R20
- 2025 Audi Q7 255/55R19 / 285/45R20
- 2024 Audi Q7 255/55R19 / 285/45R20
- 2023 Audi Q7 255/55R19 / 285/45R20
- 2022 Audi Q7 255/55R19 / 285/45R20
- 2021 Audi Q7 255/55R19 / 285/45R20
- 2020 Audi Q7 255/60R18 / 255/55R19 / 285/45R20
- 2019 Audi Q7 255/60R18 / 255/55R19 / 285/45R20
- 2018 Audi Q7 255/60R18 / 255/55R19 / 285/45R20
- 2017 Audi Q7 255/60R18 / 255/55R19 / 285/45R20
How to read a tire size
A tire size like 225/45R17 breaks down into three parts:
the first number is the section width in millimeters
(the tire's width from sidewall to sidewall), the second is the
aspect ratio — the sidewall's height as a percentage of
that width — and the number after the "R" is the rim
diameter in inches. A letter prefix (P or LT) indicates
Passenger or Light Truck construction; its absence usually means
Euro-metric sizing.
Some trucks and off-road tires instead use "flotation" sizing, like
37X12.50R17 — here the numbers are the tire's overall
diameter and width in inches directly, with the rim diameter last.
Always verify against the tire information placard on your driver's-side door jamb or your owner's manual before purchasing — tire size can vary by factory option package even within the same trim.