Lexus IS tyre pressures
Front 35 psi (2.4 bar), rear 38 psi (2.6 bar) on the standard 16-inch wheels, and the figures for the other 6 wheel sizes it was sold with. Manufacturer data, checked cold.
| Wheels | Tyre size | Front | Rear |
|---|---|---|---|
| 16"standard | 205/55R16 | 35 psi · 2.4 bar | 38 psi · 2.6 bar |
| 18" | 225/40R18 / 255/40R18 | 35 psi · 2.4 bar | 38 psi · 2.6 bar |
| 18" | 225/40R18 / 255/40R18 | 35 psi · 2.4 bar | 38 psi · 2.6 bar |
| 18" | 225/40R18 / 255/40R18 | 35 psi · 2.4 bar | 38 psi · 2.6 bar |
| 17" | 225/45R17 | 35 psi · 2.4 bar | 38 psi · 2.6 bar |
| 17" | 225/45R17 / 245/45R17 | 35 psi · 2.4 bar | 38 psi · 2.6 bar |
| 17" | 225/45R17 / 245/45R17 | 35 psi · 2.4 bar | 38 psi · 2.6 bar |
Manufacturer figures for the Lexus IS, normal load, tyres cold. If the label on your door pillar or fuel flap says something different, go with that.
Resetting the tyre pressure warning light on your Lexus
All current UK Lexus models have sensors in the wheels and are reset much like Toyotas.
- Set all four tyres to the correct cold pressure.
- Turn the ignition on.
- Open Vehicle Settings on the dashboard display with the steering-wheel controls, select the tyre pressure item and follow the prompts.
- Some models (such as the RC F) have a TPMS button under the dashboard instead: hold it until the light flashes and goes out.
When to reset: Reset after inflating tyres to the correct pressure and after replacing a tyre.
Menu names vary by model and year, so check your handbook if yours looks different. More in what the warning light means.
Got a different IS? Check by registration
Put your reg in and we'll show the figures for your exact car, including the wheel size it left the factory on.
What tyre pressure should a IS have?
35 psi at the front and 38 psi at the rear (2.4 and 2.6 bar) on the standard 16-inch wheels, with the tyres cold. Larger optional wheels use slightly different figures — see the table above.
Should I use a higher pressure when the car is loaded?
The manufacturer gives one figure for this car, so no. If you're carrying a full load for a long motorway run, the label on the door pillar may show a higher figure — follow that if it does.
What tyre size does the IS use?
205/55R16, 225/40R18, 255/40R18, 225/45R17 or 245/45R17, depending on the wheels it was ordered with. The size is on the tyre's sidewall, e.g. 235/40R18.
Check them cold. Pressures are set for tyres that haven't been driven more than a mile or two. After a run they read 3–4 psi high.
Once a month, and before a long trip. Tyres lose about 1 psi a month on their own.
The sticker wins. If your car's door-pillar or fuel-flap label says something different, go with that — it knows your exact spec.