2026 Lexus IS Tire Size
The 2026 Lexus IS uses different sizes front and rear: 235/40R19 at the front and 265/35R19 at the rear. Recommended cold pressure: 35 to 36 psi front, 35 to 36 psi rear depending on size.
Not sure which one you have? Read the size off your tire's sidewall, or check the label on the driver's door jamb. How to read a tire size.
✓ From the manual ·2026 Lexus IS owner's manual, p. 406, 407
Factory tire sizes
- Width
- 235 mm (9.3 in)
- Wheel
- 19 in · 19 x 8 1/2J
- Overall diameter
- 26.4 in
- Cold pressure
- 35 psi front, 36 psi rear
- Load index
- 92 (1,389 lb)
- Speed rating
- V (up to 149 mph)
- Width
- 235 mm (9.3 in)
- Wheel
- 19 in · 19 x 8 1/2J
- Overall diameter
- 26.4 in
- Cold pressure
- 35 psi
- Load index
- 92 (1,389 lb)
- Speed rating
- V (up to 149 mph)
- Width
- 265 mm (10.4 in)
- Wheel
- 19 in · 19 x 9 1/2J
- Overall diameter
- 26.3 in
- Cold pressure
- 36 psi
- Load index
- 94 (1,477 lb)
- Speed rating
- V (up to 149 mph)
Spare tire
- Width
- 155 mm (6.1 in)
- Wheel
- 17 in · 17 x 4T
- Overall diameter
- 25.5 in
- Cold pressure
- 60 psi
- Load index
- 110 (2,337 lb)
- Speed rating
- M (up to 81 mph)
A temporary spare is for short trips at reduced speed, usually no faster than 50 mph. Follow the limit printed on the spare and in your manual, and replace the flat as soon as you can.
Questions
What size tires does a 2026 Lexus IS have?
The 2026 Lexus IS uses different sizes front and rear: 235/40R19 at the front and 265/35R19 at the rear.
Which size is on my 2026 Lexus IS?
Look at the sidewall of one of your tires: the size is the code that looks like 235/40R19. The label on the driver's door jamb also lists the original size and pressure for your exact trim.
What tire pressure does a 2026 Lexus IS need?
The manual gives 35 to 36 psi front, 35 to 36 psi rear depending on size, measured with the tires cold. Check it before driving, and go by the door-jamb label if it differs, because that is set for your exact car.
Can I fit a different tire size on my 2026 Lexus IS?
Stick to a factory size for your wheel unless a tire shop confirms the swap. A different overall diameter changes speedometer readings and can upset ABS and stability control, and the load index must be at least the original.