What size tyres are on a Lexus RX 400h?
Short answer: The Lexus RX 400h most commonly uses 235/65R17 tires on 17-inch wheels, which is the standard OEM size for the 2005–2009 model years.
Beyond that baseline, tire sizing can vary by market, trim level, and optional wheel packages. This article outlines the typical size and how to confirm the exact specification for a specific vehicle.
Standard tyre size for the RX 400h
The factory specification most commonly cited for the RX 400h is a single-size fitment for both front and rear wheels: 235/65R17. This size provides a balance of ride comfort and all-season capability for this hybrid SUV.
- 235/65R17 104T — the typical OEM tire size used on standard 17-inch wheels.
Note: Some regional or model-year variations can occur if different wheel configurations were offered by dealers or as part of optional packages. Always verify the exact size for a given vehicle via the door placard or owner's manual.
Regional variations and how to confirm
In some markets or with certain trim packages, alternative wheel sizes may have been available, which could change the tire size from the standard 235/65R17. To be certain, check the vehicle’s tire sidewalls and the placard on the door jamb, which lists the recommended size, load index, and speed rating.
Why verification matters
Even when a car is described as a particular model year, regional options and aftermarket wheels can alter the tire size. Confirming the exact size ensures proper fitment and preserves handling characteristics.
Replacing tires on the RX 400h
If you are replacing tires, aim to match the manufacturer’s original size (235/65R17) on all four corners to maintain balanced handling and speedometer accuracy. If considering a different size, consult a Lexus dealer or tire professional to understand potential impacts on ride, traction, and instrumentation.
Summary
The RX 400h’s most common tire size is 235/65R17 on 17-inch wheels, applicable to the typical 2005–2009 models. Always verify with the door placard or owner’s manual for your specific vehicle, as wheel options and regional specifications can lead to variations.
What size tyre is a Lexus RX 400h?
The standard Lexus RX400h tire size is 225/65R17, though other factory-installed sizes include 235/55R18. If you have a different wheel size or are looking for optional sizes, the 2006 model may also have 245/50R19 or 245/45R20 as options. Always check the sticker on your driver's side door jamb or the sidewall of your current tires for the most accurate information for your specific vehicle.
- Standard size: 225/65R17
- Factory optional size: 235/55R18
- Other optional sizes (for certain trims/years): 245/50R19, 245/45R20
How to confirm your specific tire size
- Check the driver's side door jamb: A sticker on the door jamb will list the original equipment (OE) tire size and recommended tire pressure for your vehicle.
- Look at the tire sidewall: The size is also printed directly on the sidewall of the tires currently on your car.
What size tires are on a 2006 Lexus RX400h?
The 2006 Lexus RX400h has two standard tire sizes: 225/65R17 for 17-inch wheels or 235/55R18 for 18-inch wheels. It is best to check the sticker on the driver's side door jamb or the sidewall of your current tire to confirm the exact size for your vehicle.
- 17-inch wheels: 225/65R17
- 18-inch wheels: 235/55R18
What size tires are on a 2008 Lexus RX400h?
The 2008 Lexus RX400h has two common tire sizes: 225/65R17 and 235/55R18. The specific size depends on the vehicle's trim or the original equipment installed from the factory. To confirm the correct size for your vehicle, check the sticker on the driver's side door jamb or the sidewall of your current tires.
- 225/65R17: A common size for the base model, often with a 17-inch rim.
- 235/55R18: The other common size, which is typically for the standard trim with an 18-inch rim.
What is the most common problem with the Lexus RX 400h?
Top 10 Common Problems in Lexus RX 400h and How to Fix Them
- Brake Actuator Malfunction.
- Cooling System Issues.
- Transmission (CVT) Problems.
- Faulty Oxygen Sensors.
- 12V Auxiliary Battery Problems.
- Dashboard Melting (Cosmetic Issue)
- Water Leaks in Rear Hatch or Sunroof.
- Suspension Wear and Noises.
