2018 Lexus GS — F
The 2018 Lexus GS F shipped with 2 different factory tire sizes, depending on the wheel package it left the factory with (this can also reflect a staggered front/rear setup). Check your tire sidewall or door placard to confirm which one applies to your vehicle.
This trim shipped with more than one tire size (staggered fitment, front/rear, or optional wheel package). Confirm which one matches your vehicle by checking your tire sidewall or door placard.
255/35R19 (Front)
| Section width | 255 mm |
|---|---|
| Aspect ratio (sidewall height) | 35% (89.3 mm) |
| Rim diameter | 19" |
| Overall tire diameter | ~26" |
| Revolutions per mile | ~775 |
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275/35R19 (Rear)
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 35% (96.3 mm) |
| Rim diameter | 19" |
| Overall tire diameter | ~26.6" |
| Revolutions per mile | ~759 |
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What this size means for your Lexus GS
On the 2018 Lexus GS F, the factory 255/35R19 measures about 26″ in overall diameter with a 89.3 mm (3.5″) sidewall, and completes roughly 775 revolutions per mile. Its 35-series aspect ratio gives an ultra-low-profile, performance-oriented sidewall that favors steering precision over ride cushioning. In tire terms it is a passenger (P-metric / Euro-metric) size.
This is a staggered setup: the front axle runs 255/35R19 and the rear runs 275/35R19. The two sizes are not interchangeable, so order each for its correct axle and don't rotate front-to-rear.
Other 2018 Lexus GS trims
- 300 235/50R17 / 235/45R18
- 300 F Sport 235/40R19 (Front) / 265/35R19 (Rear)
- 350 235/45R18 / 235/40R19
- 350 F Sport 235/40R19 (Front) / 265/35R19 (Rear)
- 350 F Sport AWD 235/40R19
- 450h 235/45R18
- 450h F Sport 235/40R19 (Front) / 265/35R19 (Rear)
Lexus GS tire sizes by year
- 2020 Lexus GS 235/45R18 / 235/40R19
- 2019 Lexus GS 235/50R17 / 235/45R18
- 2017 Lexus GS 235/45R18
- 2016 Lexus GS 235/50R17 / 235/45R18
- 2015 Lexus GS 225/50R17 / 235/45R18
- 2014 Lexus GS 225/50R17 / 235/45R18
- 2013 Lexus GS 225/50R17 / 235/45R18
- 2012 Lexus GS 225/50R17
- 2011 Lexus GS 225/50R17
- 2010 Lexus GS 225/50R17
How to read a tire size
A tire size like 225/45R17 breaks down into three parts:
the first number is the section width in millimeters
(the tire's width from sidewall to sidewall), the second is the
aspect ratio — the sidewall's height as a percentage of
that width — and the number after the "R" is the rim
diameter in inches. A letter prefix (P or LT) indicates
Passenger or Light Truck construction; its absence usually means
Euro-metric sizing.
Some trucks and off-road tires instead use "flotation" sizing, like
37X12.50R17 — here the numbers are the tire's overall
diameter and width in inches directly, with the rim diameter last.
Always verify against the tire information placard on your driver's-side door jamb or your owner's manual before purchasing — tire size can vary by factory option package even within the same trim.