Lexus tyre pressures
Lexus IS tyre pressure
The tyre pressures Lexus prints in its handbook for each IS tyre size, by generation — IS Mk3 (XE30) (2013–2021) and IS Mk2 (XE20) (2005–2013). Find your tyre size on the sidewall, then read across.
IS tyre pressures by generation
IS Mk3 (XE30) (2013–2021)
225/45RF17 91W
IS 300h 17-inch run-flat tyres
225/40R18 88Y (front), 255/35R18 90Y (rear)
IS 300h 18-inch tyres
| Tyre size | Front / Rear | Source | |
|---|---|---|---|
| 205/55R16 91WIS 300h 16-inch tyres | 36 psi2.5 bar | 36 psi2.5 bar | Maker's handbookSource |
| 225/45R17 91WIS 300h 17-inch tyres | 36 psi2.5 bar | 36 psi2.5 bar | Maker's handbookSource |
| 225/45RF17 91WIS 300h 17-inch run-flat tyres | 36 psi2.5 bar | 36 psi2.5 bar | Maker's handbookSource |
| 225/40R18 88Y (front), 255/35R18 90Y (rear)IS 300h 18-inch tyres | 36 psi2.5 bar | 36 psi2.5 bar | Maker's handbookSource |
Notes from the handbooks
- 205/55R16 91W: 'Normal pressure'. ECO pressure (for optimizing fuel economy): 270 (2.7, 39) front and rear. Handbook also prints a figure for driving above 160 km/h (100 mph): 250 (2.5, 36) front; rear 270 (2.7, 39) with 5 passengers, otherwise 250 (2.5, 36). 2017-10 (S64) and 2019-09 (S65) editions: normal pressure 250 (2.5, 36) at 190 km/h (118 mph) or less, 260 (2.6, 38) above 190 km/h; ECO 270 (2.7, 39).
- 225/45R17 91W: Handbook prints '225/45R17 91W, 225/45RF17 91W' (run-flat) with the same figures. Handbook also prints a figure for driving above 160 km/h (100 mph): 250 (2.5, 36) front; rear 270 (2.7, 39) with 5 passengers, otherwise 250 (2.5, 36). 2017-10 (S64) and 2019-09 (S65) editions: 250/250 at 190 km/h (118 mph) or less, 290 (2.9, 42) front and rear above 190 km/h.
- 225/45RF17 91W: Handbook also prints a figure for driving above 160 km/h (100 mph): 250 (2.5, 36) front; rear 270 (2.7, 39) with 5 passengers, otherwise 250 (2.5, 36). 2017-10 (S64) and 2019-09 (S65) editions: 250/250 at 190 km/h (118 mph) or less, 290 (2.9, 42) front and rear above 190 km/h.
- 225/40R18 88Y (front), 255/35R18 90Y (rear): Handbook prints '225/40R18 88Y, 255/35R18 90Y' with wheels 18x8J (225/40R18) and 18x8 1/2J (255/35R18), and a single 250 kPa figure. Same single 250 kPa figure in S64 and S65.
What the handbooks don't say
- None of the IS 300h handbooks read (2013, 2017, 2019) prints a compact spare.
- IS 200t / IS 250 (XE30 petrol) handbooks not opened; the IS 300h was the UK volume model.
IS Mk2 (XE20) (2005–2013)
205/55R16 89W
16-inch tyres ('Type A'), IS 250 / IS 220d / IS 200d
225/45R17 90W (front), 245/45R17 95W (rear)
17-inch staggered tyres ('Type B'), IS 250 / IS 220d / IS 200d
225/40R18 88Y (front), 255/40R18 95Y (rear)
18-inch staggered tyres ('Type C'), IS 250
225/40R18 88Y (front), 255/40R18 95Y (rear)
18-inch staggered tyres ('Type C'), IS 220d and IS 200d
| Tyre size | Front / Rear | Source | |
|---|---|---|---|
| 205/55R16 89W16-inch tyres ('Type A'), IS 250 / IS 220d / IS 200d | 35 psi2.4 bar | 38 psi2.6 bar | Maker's handbookSource |
| 225/45R17 90W (front), 245/45R17 95W (rear)17-inch staggered tyres ('Type B'), IS 250 / IS 220d / IS 200d | 35 psi2.4 bar | 38 psi2.6 bar | Maker's handbookSource |
| 225/40R18 88Y (front), 255/40R18 95Y (rear)18-inch staggered tyres ('Type C'), IS 250 | 35 psi2.4 bar | 38 psi2.6 bar | Maker's handbookSource |
| 225/40R18 88Y (front), 255/40R18 95Y (rear)18-inch staggered tyres ('Type C'), IS 220d and IS 200d | 38 psi2.6 bar | 41 psi2.8 bar | Maker's handbookSource |
Spare wheel: T125/70D17 98M — 60 psi (4.2 bar) Maker's handbookSource
Notes from the handbooks
- 205/55R16 89W: Handbook also prints higher figures for 160-210 km/h (100-132 mph) and above 210 km/h: 290 (2.9, 42) / 310 (3.1, 45) and 310 (3.1, 45) / 330 (3.3, 48) front / rear.
- 225/45R17 90W (front), 245/45R17 95W (rear): Handbook prints 'Front tires: 225/45R17 90W, Rear tires: 245/45R17 95W'. Handbook also prints higher figures for 160-210 km/h (100-132 mph) and above 210 km/h: 280 (2.8, 41) / 300 (3.0, 44) and 300 (3.0, 44) / 320 (3.2, 46).
- 225/40R18 88Y (front), 255/40R18 95Y (rear): Handbook prints 'Front tires: 225/40R18 88Y, Rear tires: 255/40R18 95Y'. Handbook also prints higher figures for 160-210 km/h (100-132 mph) and above 210 km/h: 300 (3.0, 44) / 320 (3.2, 46) and 320 (3.2, 46) / 340 (3.4, 49).
- 225/40R18 88Y (front), 255/40R18 95Y (rear): Handbook also prints higher figures for 160-210 km/h (100-132 mph) and above 210 km/h: 300 (3.0, 44) / 320 (3.2, 46) and 320 (3.2, 46) / 340 (3.4, 49).
What the handbooks don't say
- Only the 2011 edition was read; 2005-2010 IS handbooks are not on the manual site in English. IS F (V8) handbook not opened.
Figures marked "Maker's handbook" link to the maker's own document. "Reported" figures are the maker's, read from a copy we could not get from the maker directly. A figure marked ≈ has been converted from the unit the handbook prints. Nothing here has been checked against your car: if it disagrees with the label on the car, the label wins.
Check your own car by registration
Tyre pressure questions
What tyre pressure should a Lexus IS have?
It depends on the tyre size and, on some versions, the engine. For the sizes Lexus lists, the normal-load pressure is 35–38 psi (2.4–2.6 bar) at the front and 36–41 psi (2.5–2.8 bar) at the rear. Find your size in the tables above, and check the tyres cold.
What size tyres does a Lexus IS take?
Lexus fitted the IS with 205/55 R16, 225/45 R17 and 225/40 R18, depending on the generation and trim. The size is printed on the side of your tyre; the pressures above are listed by size.
Where is the tyre pressure label on a Lexus IS?
On most cars it is on the driver's door pillar or inside the fuel filler flap. It normally gives the same figures as the handbook, which is where the ones on this page come from — if the two ever disagree, go by the label on your car.