2020 Lexus LX — 570
The 2020 Lexus LX 570 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.
285/50R20
| Section width | 285 mm |
|---|---|
| Aspect ratio (sidewall height) | 50% (142.5 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~31.2" |
| Revolutions per mile | ~646 |
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275/50R21
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 50% (137.5 mm) |
| Rim diameter | 21" |
| Overall tire diameter | ~31.8" |
| Revolutions per mile | ~634 |
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What this size means for your Lexus LX
On the 2020 Lexus LX 570, the factory 285/50R20 measures about 31.2″ in overall diameter with a 142.5 mm (5.6″) sidewall, and completes roughly 646 revolutions per mile. Its 50-series aspect ratio gives a balanced everyday-passenger profile — enough sidewall to soak up road shock while keeping steering response crisp. In tire terms it is a large-diameter fitment.
The 285/50R20 and 275/50R21 differ in both width and overall diameter (0.6″, 1.9%), which usually means a staggered front/rear setup — the two sizes are not interchangeable side to side, so match each to its correct axle.
Lexus LX tire sizes by year
- 2026 Lexus LX 265/50R22
- 2025 Lexus LX 265/50R22
- 2024 Lexus LX 265/65R18 / 265/55R20
- 2023 Lexus LX 265/65R18 / 265/55R20
- 2022 Lexus LX 265/65R18 / 265/55R20
- 2021 Lexus LX 285/50R20 / 275/50R21
- 2019 Lexus LX 285/50R20 / 275/50R21
- 2018 Lexus LX 285/50R20 / 275/50R21
- 2017 Lexus LX 285/50R20 / 275/50R21
- 2016 Lexus LX 285/50R20 / 275/50R21
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.