What is the recommended tire pressure for a 2024 Lexus RX?

The 2024 Lexus RX 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 2024 Lexus RX use?

The standard (base trim) tire size for the 2024 Lexus RX is 235/55R20. 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 2024 Lexus RX 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 2024 Lexus RX?

The 2024 Lexus RX uses 35 PSI front and 33 PSI rear because the two axles carry different loads. The front axle carries roughly 57% of the vehicle's 1950 kg curb weight, requiring a slightly different pressure to maintain the correct contact patch at each corner.

What happens if the 2024 Lexus RX tires are underinflated?

Running 5+ PSI low on the Lexus RX 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 235/55R20 mean on the 2024 Lexus RX?

On the 2024 Lexus RX, 235/55R20 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 20 = the wheel diameter in inches.

What is the overall diameter of the 2024 Lexus RX tires?

The 235/55R20 tire on the 2024 Lexus RX has an overall diameter of about 30.18" (767 mm) and a rolling circumference of roughly 94.8", giving about 668 revolutions per mile. Fitting a tire with a different diameter will throw off your speedometer and odometer.

2024 Lexus RX Tire Pressure

OEM cold pressure spec — verified for the 2020–2024 generation.

Recommended cold pressure

Front

35PSI

241 kPa

Rear

33PSI

228 kPa

Tire size

235/55R20

Curb weight

1,950 kg

Front axle

57%

2024 Lexus RX tire size: 235/55R20

The factory (base-trim) tire size for the 2024 Lexus RX is 235/55R20. 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

20"

rim

Overall diameter: 30.18"; 767 mm
Sidewall height: 5.09"; 129.3 mm
Circumference: 94.8"; rolling
Revs / mile: 668; approx.

Staying within ±3% of the 30.18" overall diameter keeps your speedometer accurate. A larger diameter reads slower than your true speed; a smaller one reads faster.

Custom adjustment

Tune for your load & driving style

Pre-filled with Lexus RX specs. Adjust weight or style below.

Recommended COLD pressure

26.3 / 22 PSI

Front (cold): 26.3 PSI(1.81 bar)
Rear (cold): 22 PSI(1.52 bar)
Front (hot est.): 28.9 PSI
Rear (hot est.): 24.2 PSI

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

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FAQ

2024 Lexus RX

What is the recommended tire pressure for a 2024 Lexus RX?: The 2024 Lexus RX 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 2024 Lexus RX use?: The standard (base trim) tire size for the 2024 Lexus RX is 235/55R20. 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 2024 Lexus RX 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 2024 Lexus RX?: The 2024 Lexus RX uses 35 PSI front and 33 PSI rear because the two axles carry different loads. The front axle carries roughly 57% of the vehicle's 1950 kg curb weight, requiring a slightly different pressure to maintain the correct contact patch at each corner.
What happens if the 2024 Lexus RX tires are underinflated?: Running 5+ PSI low on the Lexus RX 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 235/55R20 mean on the 2024 Lexus RX?: On the 2024 Lexus RX, 235/55R20 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 20 = the wheel diameter in inches.
What is the overall diameter of the 2024 Lexus RX tires?: The 235/55R20 tire on the 2024 Lexus RX has an overall diameter of about 30.18" (767 mm) and a rolling circumference of roughly 94.8", giving about 668 revolutions per mile. Fitting a tire with a different diameter will throw off your speedometer and odometer.