What is the recommended tire pressure for a 2015 Ford Mustang?

The 2015 Ford Mustang uses 35 PSI cold on the front axle and 33 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 2015 Ford Mustang use?

The standard (base trim) tire size for the 2015 Ford Mustang is 235/55R17. 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 2015 Ford Mustang tire pressure to bar?

35 PSI = 2.4 bar (front) and 33 PSI = 2.3 bar (rear). In kPa: 241 kPa front and 228 kPa rear. Multiply PSI × 0.0689 to convert to bar.

Why are the front and rear tire pressures different on the 2015 Ford Mustang?

The 2015 Ford Mustang uses 35 PSI front and 33 PSI rear because the two axles carry different loads. The front axle carries roughly 54% of the vehicle's 1730 kg curb weight, requiring a slightly different pressure to maintain the correct contact patch at each corner.

What happens if the 2015 Ford Mustang tires are underinflated?

Running 5+ PSI low on the Ford Mustang 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 235/55R17 mean on the 2015 Ford Mustang?

On the 2015 Ford Mustang, 235/55R17 breaks down as: 235 = section width in millimetres (9.25"), 55 = aspect ratio (the sidewall is 55% of the width, so 129.3 mm / 5.09" tall), R = radial construction, and 17 = the wheel diameter in inches.

What is the overall diameter of the 2015 Ford Mustang tires?

The 235/55R17 tire on the 2015 Ford Mustang has an overall diameter of about 27.18" (690 mm) and a rolling circumference of roughly 85.38", giving about 742 revolutions per mile. Fitting a tire with a different diameter will throw off your speedometer and odometer.

2015 Ford Mustang Tire Pressure

OEM cold pressure spec — verified for the 2015–2023 generation.

Recommended cold pressure

Front

35PSI

241 kPa

Rear

33PSI

228 kPa

Tire size

235/55R17

Curb weight

1,730 kg

Front axle

54%

2015 Ford Mustang tire size: 235/55R17

The factory (base-trim) tire size for the 2015 Ford Mustang is 235/55R17. 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

235 mm

9.25"

Aspect ratio

55%

129.3 mm sidewall

Wheel diameter

17"

rim

Overall diameter: 27.18"; 690 mm
Sidewall height: 5.09"; 129.3 mm
Circumference: 85.38"; rolling
Revs / mile: 742; approx.

Staying within ±3% of the 27.18" 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

24.5 / 22 PSI

Front (cold): 24.5 PSI(1.69 bar)
Rear (cold): 22 PSI(1.52 bar)
Front (hot est.): 27 PSI
Rear (hot est.): 24.2 PSI

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

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FAQ

2015 Ford Mustang

What is the recommended tire pressure for a 2015 Ford Mustang?: The 2015 Ford Mustang uses 35 PSI cold on the front axle and 33 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 2015 Ford Mustang use?: The standard (base trim) tire size for the 2015 Ford Mustang is 235/55R17. 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 2015 Ford Mustang tire pressure to bar?: 35 PSI = 2.4 bar (front) and 33 PSI = 2.3 bar (rear). In kPa: 241 kPa front and 228 kPa rear. Multiply PSI × 0.0689 to convert to bar.
Why are the front and rear tire pressures different on the 2015 Ford Mustang?: The 2015 Ford Mustang uses 35 PSI front and 33 PSI rear because the two axles carry different loads. The front axle carries roughly 54% of the vehicle's 1730 kg curb weight, requiring a slightly different pressure to maintain the correct contact patch at each corner.
What happens if the 2015 Ford Mustang tires are underinflated?: Running 5+ PSI low on the Ford Mustang 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 235/55R17 mean on the 2015 Ford Mustang?: On the 2015 Ford Mustang, 235/55R17 breaks down as: 235 = section width in millimetres (9.25"), 55 = aspect ratio (the sidewall is 55% of the width, so 129.3 mm / 5.09" tall), R = radial construction, and 17 = the wheel diameter in inches.
What is the overall diameter of the 2015 Ford Mustang tires?: The 235/55R17 tire on the 2015 Ford Mustang has an overall diameter of about 27.18" (690 mm) and a rolling circumference of roughly 85.38", giving about 742 revolutions per mile. Fitting a tire with a different diameter will throw off your speedometer and odometer.