Lexus IS300 tire size
The most common factory tire size for the Lexus IS300 is 225/40R18 front, 255/35R18 rear, on 32 of the 59 year and trim fits listed. Each year below lists the sizes its trims were built with (2016 to 2025). Pick your year and trim to see the tires that fit.
Lexus IS300 tire sizes by year
20253 sizes · 9 trims
20243 sizes · 9 trims
20202 sizes · 12 trims
20192 sizes · 11 trims
20182 sizes · 11 trims
20172 sizes · 9 trims
Check your own tire
A trim can be sold with more than one wheel size. The size printed on the sidewall of your current tire, or on the placard in the driver's door jamb, is the one your vehicle has.