2017 Lexus IS300 Tire Sizes

Factory original equipment (OE) tire specifications.

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Base

Tire Size
225/45R17
Load Index
91
Speed Rating
V

Base

Tire Size
225/45R17
Load Index
91
Speed Rating
W

Base

Front
Tire Size
225/40R18
Load Index
88
Speed Rating
W

Base

Rear
Tire Size
255/35R18
Load Index
90
Speed Rating
W

F Sport

Front
Tire Size
225/40R18
Load Index
88
Speed Rating
Y

F Sport

Rear
Tire Size
255/35R18
Load Index
90
Speed Rating
Y