What is the recommended tire pressure for a 2021 Audi Q7?

The 2021 Audi Q7 uses 36 PSI cold on the front axle and 36 PSI cold on the rear axle. These are the OEM specifications. Always measure tire pressure when the tires are cold — before driving or after sitting for at least 3 hours.

What tire size does the 2021 Audi Q7 use?

The standard (base trim) tire size for the 2021 Audi Q7 is 255/50R19. Higher trim levels and optional packages may use a different size — check the sticker inside your driver's door for the exact specification for your vehicle.

How do I convert the 2021 Audi Q7 tire pressure to bar?

36 PSI = 2.5 bar (front) and 36 PSI = 2.5 bar (rear). In kPa: 248 kPa front and 248 kPa rear. Multiply PSI × 0.0689 to convert to bar.

Why are the front and rear tire pressures the same on the 2021 Audi Q7?

The 2021 Audi Q7 uses equal pressure front and rear (36 PSI). The vehicle's weight distribution and symmetric tire sizing mean both axles carry similar loads per tire.

What happens if the 2021 Audi Q7 tires are underinflated?

Running 5+ PSI low on the Audi Q7 causes uneven shoulder wear, increased rolling resistance (worse fuel economy), higher tire operating temperature, and reduced wet braking performance. In extreme cases, chronic underinflation can cause sidewall failure. Check pressure monthly and always after a large temperature swing.

What do the numbers in 255/50R19 mean on the 2021 Audi Q7?

On the 2021 Audi Q7, 255/50R19 breaks down as: 255 = section width in millimetres (10.04"), 50 = aspect ratio (the sidewall is 50% of the width, so 127.5 mm / 5.02" tall), R = radial construction, and 19 = the wheel diameter in inches.

What is the overall diameter of the 2021 Audi Q7 tires?

The 255/50R19 tire on the 2021 Audi Q7 has an overall diameter of about 29.04" (738 mm) and a rolling circumference of roughly 91.23", giving about 695 revolutions per mile. Fitting a tire with a different diameter will throw off your speedometer and odometer.

2021 Audi Q7 Tire Pressure

OEM cold pressure spec — verified for the 2016–2024 generation.

Recommended cold pressure

Front

36PSI

248 kPa

Rear

36PSI

248 kPa

Tire size

255/50R19

Curb weight

2,110 kg

Front axle

54%

2021 Audi Q7 tire size: 255/50R19

The factory (base-trim) tire size for the 2021 Audi Q7 is 255/50R19. Here is what that size measures out to in the real world — useful when comparing replacement tires or checking whether a different size will fit.

Section width

255 mm

10.04"

Aspect ratio

50%

127.5 mm sidewall

Wheel diameter

19"

rim

Overall diameter: 29.04"; 738 mm
Sidewall height: 5.02"; 127.5 mm
Circumference: 91.23"; rolling
Revs / mile: 695; approx.

Staying within ±3% of the 29.04" overall diameter keeps your speedometer accurate. A larger diameter reads slower than your true speed; a smaller one reads faster.

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Recommended COLD pressure

26.1 / 22.3 PSI

Front (cold): 26.1 PSI(1.8 bar)
Rear (cold): 22.3 PSI(1.53 bar)
Front (hot est.): 28.7 PSI
Rear (hot est.): 24.5 PSI

Street setting: balanced for comfort, wear, and fuel economy. Always measure cold.

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FAQ

2021 Audi Q7

What is the recommended tire pressure for a 2021 Audi Q7?: The 2021 Audi Q7 uses 36 PSI cold on the front axle and 36 PSI cold on the rear axle. These are the OEM specifications. Always measure tire pressure when the tires are cold — before driving or after sitting for at least 3 hours.
What tire size does the 2021 Audi Q7 use?: The standard (base trim) tire size for the 2021 Audi Q7 is 255/50R19. Higher trim levels and optional packages may use a different size — check the sticker inside your driver's door for the exact specification for your vehicle.
How do I convert the 2021 Audi Q7 tire pressure to bar?: 36 PSI = 2.5 bar (front) and 36 PSI = 2.5 bar (rear). In kPa: 248 kPa front and 248 kPa rear. Multiply PSI × 0.0689 to convert to bar.
Why are the front and rear tire pressures the same on the 2021 Audi Q7?: The 2021 Audi Q7 uses equal pressure front and rear (36 PSI). The vehicle's weight distribution and symmetric tire sizing mean both axles carry similar loads per tire.
What happens if the 2021 Audi Q7 tires are underinflated?: Running 5+ PSI low on the Audi Q7 causes uneven shoulder wear, increased rolling resistance (worse fuel economy), higher tire operating temperature, and reduced wet braking performance. In extreme cases, chronic underinflation can cause sidewall failure. Check pressure monthly and always after a large temperature swing.
What do the numbers in 255/50R19 mean on the 2021 Audi Q7?: On the 2021 Audi Q7, 255/50R19 breaks down as: 255 = section width in millimetres (10.04"), 50 = aspect ratio (the sidewall is 50% of the width, so 127.5 mm / 5.02" tall), R = radial construction, and 19 = the wheel diameter in inches.
What is the overall diameter of the 2021 Audi Q7 tires?: The 255/50R19 tire on the 2021 Audi Q7 has an overall diameter of about 29.04" (738 mm) and a rolling circumference of roughly 91.23", giving about 695 revolutions per mile. Fitting a tire with a different diameter will throw off your speedometer and odometer.