What size tires are on a 2018 Lexus IS300 AWD?
The 2018 Lexus IS300 AWD does not have a single universal tire size; it depends on the trim and wheel package. The most common OEM sizes are 235/40R18 on 18-inch wheels, and 235/35R19 on 19-inch wheels. Always confirm by checking the door jamb placard or the factory documentation for your vehicle.
Why the sizes vary
The IS300 AWD was offered with different wheel options, and markets vary. The tire size can differ if you have standard 18-inch wheels versus optional 19-inch wheels, or if it’s a different market (United States vs other regions). The correct size is not printed on the bumper; the placard in the driver’s door jamb lists the exact front and rear sizes, which are typically the same for this model, though some configurations used specific tire selections for the F SPORT line.
To confirm the exact tire size for your car, you can use the steps below.
- Check the driver’s door jamb placard for the exact tire size specification (front and rear).
- Consult the owner’s manual or contact a Lexus dealer for the original equipment tire sizes based on your VIN.
- Visit Lexus’ official parts site and enter your vehicle details to see factory tire recommendations.
Using the exact OE size ensures proper handling, load capacity, and calibration for systems like ABS and traction control. If you’re replacing tires, match the size to the OEM spec unless you have a specific reason to change (for example, different wheel diameter).
Typical OEM sizes by wheel diameter
Here's what you’re most likely to see in US-market IS300 AWD configurations, noting that exact sizes can vary by market and trim:
- 18-inch wheels: 235/40R18
- 19-inch wheels: 235/35R19
Note that sizes can vary by market, trim level, or optional wheel packages. Always verify with your vehicle’s documentation or a Lexus dealer.
Additional considerations for tire replacements
When replacing tires on an AWD Lexus IS300, it’s important to maintain consistency in tire size, speed rating, and load index across all tires if you replace more than one. If you need to change sizes for performance or clearance reasons, consult a professional to ensure the vehicle’s all-wheel-drive system and safety features remain properly calibrated.
Summary
For the 2018 Lexus IS300 AWD, the most common factory tire sizes are 235/40R18 on 18-inch wheels and 235/35R19 on 19-inch wheels. Always verify the exact size using the door jamb placard, the owner’s manual, or a Lexus dealer, as configurations can differ by market and trim. When replacing tires, aim to match the OEM specifications to preserve handling and safety.
What size tires are on a Lexus IS300?
The Lexus IS300 tire size depends on the model year and trim, with common sizes being 225/45R17 (base/RWD) or 225/40R18 front and 255/35R18 rear (F Sport/AWD/performance). For the most accurate information for your specific vehicle, check the sticker on the driver's side door jamb or the sidewall of your current tires.
Common tire sizes
- 225/45R17: Often standard on rear-wheel-drive (RWD) models.
- 225/40R18 (front) and 255/35R18 (rear): Common on all-wheel-drive (AWD) and F Sport models.
- 235/45R18: Sometimes used on AWD models.
- 235/40R19: Available on models with the Premium Package.
How to find the correct size for your vehicle
- Check the driver's side door jamb: A sticker with the vehicle's original equipment (OE) tire size and recommended pressures is located here.
- Inspect the sidewall of your current tires: The size information is printed on the side of every tire.
What size tires are on a 2018 Lexus IS 300 AWD?
2018 Lexus IS 300 tires could be 225/45R17, 225/40R18, or 255/35R18 depending on the vehicle's trim level which includes (AWD), (AWD) Front, (AWD) Rear, (RWD), (RWD) Front, (RWD) Rear, F Sport Front, and F Sport Rear.
Is the 2018 Lexus IS 300 expensive to maintain?
A Lexus IS 300 will cost about $5,865 for maintenance and repairs during its first 10 years of service. This beats the industry average for luxury sedan models by $3,925. There is also a 15.63% chance that an IS 300 will require a major repair during that time.
Does the 2018 Lexus IS 300 require premium gas?
Most Lexus vehicles, particularly those with turbocharged or performance-focused engines, require premium gas. If you're driving any of these models, be sure to fill up with 91-octane or higher: Lexus IS (IS 300, IS 350, IS 500) Lexus LS (LS 500, LS 500h)
