2016 Mercedes-Benz GL450 — Base Model
The 2016 Mercedes-Benz GL450 Base Model 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.
275/55R19
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 55% (151.3 mm) |
| Rim diameter | 19" |
| Overall tire diameter | ~30.9" |
| Revolutions per mile | ~652 |
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275/50R20
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 50% (137.5 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~30.8" |
| Revolutions per mile | ~654 |
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What this size means for your Mercedes-Benz GL450
On the 2016 Mercedes-Benz GL450 Base Model, the factory 275/55R19 measures about 30.9″ in overall diameter with a 151.3 mm (6″) sidewall, and completes roughly 652 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 275/55R19 and 275/50R20 roll within 0.1″ (0.3%) 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 2016 Mercedes-Benz GL450 trims
- Runflat 275/50R20
Mercedes-Benz GL450 tire sizes by year
- 2015 Mercedes-Benz GL450 275/55R19 / 275/50R20
- 2014 Mercedes-Benz GL450 275/55R19 / 275/50R20
- 2013 Mercedes-Benz GL450 275/50R20
- 2012 Mercedes-Benz GL450 275/50R20
- 2011 Mercedes-Benz GL450 275/50R20
- 2010 Mercedes-Benz GL450 275/50R20
- 2009 Mercedes-Benz GL450 275/50R20
- 2008 Mercedes-Benz GL450 265/60R18 / 275/55R19 / 275/50R20
- 2007 Mercedes-Benz GL450 265/60R18 / 275/55R19 / 275/50R20
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.