What size tires are on a Lexus is300h?
The tire size on a Lexus IS300h depends on the model year and wheel option. In typical factory setups, you’ll encounter 17-inch wheels wearing 225/45R17 or 235/45R17, and 18-inch wheels wearing 235/40R18 or 235/45R18. To confirm your exact size, check the door jamb placard or the owner's manual.
How tire sizes vary by year, market and trim
Because the IS300h was sold in multiple regions with different wheel packages, the exact OEM size can differ. The following outlines the most common configurations you may see on European, Asian, and North American examples from the mid-2010s.
17-inch wheel configuration
IS300h models with 17-inch wheels typically use one of two standard tire sizes depending on trim and market.
- 225/45R17 — common on base 17-inch setups
- 235/45R17 — used on higher trims or certain markets
When replacing tires for 17-inch wheels, verify both the width and the aspect ratio with the vehicle’s placard and ensure the load index and speed rating meet or exceed the original specifications.
18-inch wheel configuration
IS300h models with 18-inch wheels usually run a low-profile 235-series tire, with two common sizes depending on the exact wheel and market.
- 235/40R18 — a common 18-inch option on many trims
- 235/45R18 — used in some markets or for certain packages
If your IS300h came with 18-inch wheels, confirm the exact size in the owner’s manual or on the tire placard, as some markets offered slightly different specifications for sport vs. luxury packages.
Other considerations for tire choice
Beyond size, consider load index, speed rating, and tire type (all-season vs. summer) to match your driving conditions and climate. If you’re replacing a single tire or upgrading wheels, aim to maintain overall rolling diameter within a small tolerance to preserve speedometer accuracy and handling characteristics.
Summary
In short, the Lexus IS300h does not have a single universal tire size. Most owners will find either 225/45R17 or 235/45R17 on 17-inch wheels, or 235/40R18 or 235/45R18 on 18-inch wheels, depending on year and market. Always verify with the door jamb placard or owner’s manual for your exact vehicle, and align any replacements with the recommended load index and speed rating.
What size tires are on a Lexus 300h hybrid?
Tire sizes could be 215/55R17 or 235/45R18.
What are the common problems with the IS300H?
Problem: The IS300 is known for being heavy on the clutch. If you have found that the biting point on the clutch is very high, then this is an indication that the clutch is about to fail.
What size tyres are on a Lexus is300h?
300h. SE grade models feature 16-inch alloy wheels and use 205/55R16 91W-sized tyres. Executive Edition, Luxury and Advance models ride on 17-inch alloys and use 225/45R17 tyres. F Sport and Premier grades use 225/40R18 88Y tyres up front and 255/35R18 90Y at the rear.
What size tires are on a Lexus IS300?
The IS300 tire size varies by model year and trim, but common sizes include 225/45R17 for base models, and 225/40R18 front and 255/35R18 rear for F Sport models. For newer generations, the standard size is often 235/45R18. Always check the sidewall of your current tires or your vehicle's doorjamb for the most accurate size for your specific vehicle.
Common tire sizes by trim and generation
- F Sport (most years):
- Front: 225/40R18
- Rear: 255/35R18
- Base (17-inch wheels):
- 225/45R17
- Base (18-inch wheels):
- Front: 225/40R18
- Rear: 255/35R18
- Newer Generations (e.g., 2022):
- All-wheel drive: 235/45R18
- All-wheel drive with Premium Package: 235/40R19
- Older Generations (e.g., 2002):
- 205/55R16
- 215/45R17
Important considerations
- The most accurate way to confirm your IS300's tire size is to check the vehicle's doorjamb or the tire's sidewall.
- When choosing a new tire, ensure it matches the size and load rating specified by the manufacturer to maintain performance and safety.
