2011 Infiniti QX56 — 2wd
The 2011 Infiniti QX56 2wd 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.
275/60R20
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 60% (165 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~33" |
| Revolutions per mile | ~611 |
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275/50R22
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 50% (137.5 mm) |
| Rim diameter | 22" |
| Overall tire diameter | ~32.8" |
| Revolutions per mile | ~614 |
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What this size means for your Infiniti QX56
On the 2011 Infiniti QX56 2wd, the factory 275/60R20 measures about 33″ in overall diameter with a 165 mm (6.5″) sidewall, and completes roughly 611 revolutions per mile. Its 60-series aspect ratio gives a taller, comfort-biased sidewall that favors ride quality and shrugs off rough pavement. In tire terms it is a large-diameter fitment.
The 275/60R20 and 275/50R22 roll within 0.2″ (0.6%) 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 2011 Infiniti QX56 trims
- 4wd 275/60R20 / 275/50R22
Infiniti QX56 tire sizes by year
- 2012 Infiniti QX56 275/60R20 / 275/50R22
- 2010 Infiniti QX56 275/60R20
- 2009 Infiniti QX56 275/60R20
- 2008 Infiniti QX56 275/60R20
- 2007 Infiniti QX56 265/70R18
- 2006 Infiniti QX56 265/70R18
- 2005 Infiniti QX56 265/70R18
- 2004 Infiniti QX56 265/70R18
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.