Confirm Tire SizeShopping for tires? Select tire size to proceed.
2022 Lexus IS300 Base
Lexus equips your vehicle with more than one possible size during production.
Please select the size installed on your vehicle from the choices below.
Original Equipment Wheel Diameter: 18"
235/45R18Original Equipment Wheel Diameter: 19"
235/40R19![The tire size is set by the numbers on the tire. The numbers are width, ratio and diameter in order]()
Where can I find my tire size? 
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Where can I find my tire size?