What is the recommended tire pressure for a 2019 Jeep Wrangler?

The 2019 Jeep Wrangler uses 37 PSI cold on the front axle and 37 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 2019 Jeep Wrangler use?

The standard (base trim) tire size for the 2019 Jeep Wrangler is 255/70R18. 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 2019 Jeep Wrangler tire pressure to bar?

37 PSI = 2.6 bar (front) and 37 PSI = 2.6 bar (rear). In kPa: 255 kPa front and 255 kPa rear. Multiply PSI × 0.0689 to convert to bar.

Why are the front and rear tire pressures the same on the 2019 Jeep Wrangler?

The 2019 Jeep Wrangler uses equal pressure front and rear (37 PSI). The vehicle's weight distribution and symmetric tire sizing mean both axles carry similar loads per tire.

What happens if the 2019 Jeep Wrangler tires are underinflated?

Running 5+ PSI low on the Jeep Wrangler 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 255/70R18 mean on the 2019 Jeep Wrangler?

On the 2019 Jeep Wrangler, 255/70R18 breaks down as: 255 = section width in millimetres (10.04"), 70 = aspect ratio (the sidewall is 70% of the width, so 178.5 mm / 7.03" tall), R = radial construction, and 18 = the wheel diameter in inches.

What is the overall diameter of the 2019 Jeep Wrangler tires?

The 255/70R18 tire on the 2019 Jeep Wrangler has an overall diameter of about 32.06" (814 mm) and a rolling circumference of roughly 100.7", giving about 629 revolutions per mile. Fitting a tire with a different diameter will throw off your speedometer and odometer.

2019 Jeep Wrangler Tire Pressure

OEM cold pressure spec — verified for the 2018–2024 generation.

Recommended cold pressure

Front

37PSI

255 kPa

Rear

37PSI

255 kPa

Tire size

255/70R18

Curb weight

1,940 kg

Front axle

52%

2019 Jeep Wrangler tire size: 255/70R18

The factory (base-trim) tire size for the 2019 Jeep Wrangler is 255/70R18. 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

70%

178.5 mm sidewall

Wheel diameter

18"

rim

Overall diameter: 32.06"; 814 mm
Sidewall height: 7.03"; 178.5 mm
Circumference: 100.7"; rolling
Revs / mile: 629; approx.

Staying within ±3% of the 32.06" 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

22 / 22 PSI

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

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

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FAQ

2019 Jeep Wrangler

What is the recommended tire pressure for a 2019 Jeep Wrangler?: The 2019 Jeep Wrangler uses 37 PSI cold on the front axle and 37 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 2019 Jeep Wrangler use?: The standard (base trim) tire size for the 2019 Jeep Wrangler is 255/70R18. 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 2019 Jeep Wrangler tire pressure to bar?: 37 PSI = 2.6 bar (front) and 37 PSI = 2.6 bar (rear). In kPa: 255 kPa front and 255 kPa rear. Multiply PSI × 0.0689 to convert to bar.
Why are the front and rear tire pressures the same on the 2019 Jeep Wrangler?: The 2019 Jeep Wrangler uses equal pressure front and rear (37 PSI). The vehicle's weight distribution and symmetric tire sizing mean both axles carry similar loads per tire.
What happens if the 2019 Jeep Wrangler tires are underinflated?: Running 5+ PSI low on the Jeep Wrangler 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 255/70R18 mean on the 2019 Jeep Wrangler?: On the 2019 Jeep Wrangler, 255/70R18 breaks down as: 255 = section width in millimetres (10.04"), 70 = aspect ratio (the sidewall is 70% of the width, so 178.5 mm / 7.03" tall), R = radial construction, and 18 = the wheel diameter in inches.
What is the overall diameter of the 2019 Jeep Wrangler tires?: The 255/70R18 tire on the 2019 Jeep Wrangler has an overall diameter of about 32.06" (814 mm) and a rolling circumference of roughly 100.7", giving about 629 revolutions per mile. Fitting a tire with a different diameter will throw off your speedometer and odometer.