What size tires are on a 2007 Lexus IS250?
The standard stock tire size for a 2007 Lexus IS250 with the base 17-inch wheels is P215/45R17.
Beyond the baseline, tire sizes vary by wheel option and market. US-spec cars with the 18-inch wheels (often via the Sport Package) commonly use P225/40R18, while the base setup uses P215/45R17; always verify with the door jamb placard or owner's manual for your exact size.
Stock tire sizes by wheel option
Below are the most common factory configurations you’ll encounter for a 2007 IS250, depending on wheel size.
- P215/45R17 — standard for 17-inch wheels (base IS250 models).
- P225/40R18 — commonly found on IS250 models with 18-inch wheels (Sport Package or regional options).
These sizes reflect typical factory equipment. Exact tire size for a given vehicle may differ if it has different wheels or aftermarket replacements.
How to confirm your car’s exact tire size
To ensure you match the factory specification, inspect the placard on the driver's door jamb, which lists the recommended tire size and inflation pressures. The size is also printed on the sidewall of each installed tire and in the owner's manual. If you’re unsure, contact a Lexus dealer with your VIN for confirmation.
Important considerations
Substituting tires can affect speedometer accuracy, traction, and ride quality. When upgrading wheels or changing sizes, aim to preserve overall diameter as closely as possible to the original to avoid calibration or clearance issues.
Summary
For the 2007 Lexus IS250, the typical stock tire size is P215/45R17 on 17-inch wheels. If your car has 18-inch wheels, the common factory size is P225/40R18. Always verify the exact size on the door jamb placard or in the owner's manual, as configurations can vary by market and trim, and aftermarket wheels may require different sizes.
