What size tyre is a Lexus RX 250?
The tyre size for a Lexus RX 250 varies by year and market; there is no single universal size. In practice, owners commonly see sizes such as 235/55R18 on many 18-inch wheel configurations, with other options like 235/60R18 or 225/65R17 depending on trim and generation. The exact size for your car is listed on the door jamb placard and in the owner's manual.
Understanding tyre sizing on the RX 250
Tyre sizing uses a standard code that describes width, height, construction, and wheel diameter. For example, 235/55R18 means a tyre width of 235 mm, an aspect ratio of 55%, radial construction, and compatibility with an 18-inch wheel. The prefix P indicates a passenger-car tyre, and load/speed ratings follow the size on the sidewall. The RX 250 was offered with different wheel options across markets, so the exact size depends on your specific model and configuration.
Common sizes across markets
Because the RX 250 was offered in multiple generations and in varying markets, several sizes appear in the wild. The following are representative examples you may encounter:
- 235/55R18 — a common size on 18-inch wheels for mid-to-late first-gen RX 250/ RX 350 variants in many regions
- 235/60R18 — used on some trims or markets with similar wheel sizes
- 225/65R17 — seen on base models or older configurations with 17-inch wheels
- 235/50R19 or 235/55R19 — possible on 19-inch wheel configurations in select trims
- 235/45R20 or 235/50R20 — found on higher-end trims with 20-inch wheels
Note: These are general examples. Your exact size depends on year, market, and wheel option. Always confirm with official sources or your vehicle’s placard.
How to verify your tyre size
To determine the precise tyre size for your RX 250, check these sources in order:
- Door jamb placard (driver’s side) – lists the standard front and rear tyre sizes and recommended cold tyre pressures.
- Sidewall of each tyre – the size is printed after the brand, e.g., P235/55R18.
- Owner’s manual or official Lexus spec sheet for your VIN — sometimes lists the recommended tyre size per trim.
- If in doubt, contact a Lexus dealer or a qualified tyre professional with your VIN and wheel size information.
When replacing tyres, choose the exact size specified for your vehicle or a recommended alternative by a professional. Mismatched or non-standard sizes can affect handling, ABS, or chassis dynamics.
Spare tyre and run-flat considerations
The RX 250’s spare arrangement varies by market and trim. Some vehicles carry a full-size spare or a temporary spare, while others include a run-flat option or a repair kit. Always check the vehicle’s toolkit and owner’s manual for the spare's type and size.
Summary
The Lexus RX 250 does not have a single universal tyre size. The correct size depends on the model year, market, and wheel configuration (17", 18", 19", or 20" wheels). Common examples include 235/55R18 and related 18" options, but you should verify with the door placard or Lexus documentation for your specific vehicle. If you share your year and market, I can help identify the exact size for your RX 250 configuration.
