2020 Infiniti QX50 — Luxe AWD
The 2020 Infiniti QX50 Luxe AWD 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.
235/55R19
| Section width | 235 mm |
|---|---|
| Aspect ratio (sidewall height) | 55% (129.3 mm) |
| Rim diameter | 19" |
| Overall tire diameter | ~29.2" |
| Revolutions per mile | ~691 |
Compare prices at:
255/45R20
| Section width | 255 mm |
|---|---|
| Aspect ratio (sidewall height) | 45% (114.8 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~29" |
| Revolutions per mile | ~695 |
Compare prices at:
What this size means for your Infiniti QX50
On the 2020 Infiniti QX50 Luxe AWD, the factory 235/55R19 measures about 29.2″ in overall diameter with a 129.3 mm (5.1″) sidewall, and completes roughly 691 revolutions per mile. Its 55-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 passenger (P-metric / Euro-metric) size.
The 235/55R19 and 255/45R20 roll within 0.2″ (0.7%) of each other in overall diameter, so they are interchangeable from a speedometer standpoint — the second size is an optional wheel package rather than a different rolling size.
Other 2020 Infiniti QX50 trims
- Autograph 255/45R20
- Autograph AWD 255/45R20
- Edition 30 255/45R20
- Edition 30 AWD 255/45R20
- Essential 235/55R19
- Essential AWD 235/55R19
- Luxe 235/55R19 / 255/45R20
- Pure 235/55R19
- Pure AWD 235/55R19
- Sensory 255/45R20
- Sensory AWD 255/45R20
Infiniti QX50 tire sizes by year
- 2025 Infiniti QX50 235/55R19 / 255/45R20
- 2024 Infiniti QX50 255/45R20
- 2023 Infiniti QX50 255/45R20
- 2022 Infiniti QX50 255/45R20
- 2021 Infiniti QX50 255/45R20
- 2019 Infiniti QX50 235/55R19 / 255/45R20
- 2018 Infiniti QX50 225/55R18 / 245/45R19
- 2017 Infiniti QX50 225/55R18 / 245/45R19
- 2016 Infiniti QX50 225/55R18 / 245/45R19
- 2015 Infiniti QX50 225/55R18
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.