2017 Audi RS7 — Base Model
The 2017 Audi RS7 Base Model 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.
275/35R20
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 35% (96.3 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~27.6" |
| Revolutions per mile | ~731 |
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275/30R21
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 30% (82.5 mm) |
| Rim diameter | 21" |
| Overall tire diameter | ~27.5" |
| Revolutions per mile | ~733 |
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What this size means for your Audi RS7
On the 2017 Audi RS7 Base Model, the factory 275/35R20 measures about 27.6″ in overall diameter with a 96.3 mm (3.8″) sidewall, and completes roughly 731 revolutions per mile. Its 35-series aspect ratio gives an ultra-low-profile, performance-oriented sidewall that favors steering precision over ride cushioning. In tire terms it is a large-diameter fitment.
The 275/35R20 and 275/30R21 roll within 0.1″ (0.4%) of each other in overall diameter, so they are interchangeable from a speedometer standpoint — the second size is an optional wheel package rather than a different rolling size.
Other 2017 Audi RS7 trims
- Performance 275/30R21
Audi RS7 tire sizes by year
- 2026 Audi RS7 275/35R21 / 285/30R22
- 2025 Audi RS7 275/35R21 / 285/30R22
- 2024 Audi RS7 275/35R21 / 285/30R22
- 2023 Audi RS7 275/35R21 / 285/30R22
- 2022 Audi RS7 275/35R21 / 285/30R22
- 2021 Audi RS7 275/35R21 / 285/30R22
- 2018 Audi RS7 275/35R20 / 275/30R21
- 2016 Audi RS7 275/35R20 / 275/30R21
- 2015 Audi RS7 275/35R20 / 275/30R21
- 2014 Audi RS7 275/35R20 / 275/30R21
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.