2020 Bentley Mulsanne — Speed
The 2020 Bentley Mulsanne Speed came from the factory equipped with 265/40R21 tires. If your vehicle has since been fitted with aftermarket or upsized wheels, your actual tire size may no longer match this factory spec — always confirm against your door placard before buying.
265/40R21
| Section width | 265 mm |
|---|---|
| Aspect ratio (sidewall height) | 40% (106 mm) |
| Rim diameter | 21" |
| Overall tire diameter | ~29.3" |
| Revolutions per mile | ~687 |
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What this size means for your Bentley Mulsanne
On the 2020 Bentley Mulsanne Speed, the factory 265/40R21 measures about 29.3″ in overall diameter with a 106 mm (4.2″) sidewall, and completes roughly 687 revolutions per mile. Its 40-series aspect ratio gives a low-profile sidewall tuned for sharper handling, common on sport trims and larger-wheel packages. In tire terms it is a large-diameter fitment.
Other 2020 Bentley Mulsanne trims
- Base Model 265/45R20 / 265/40R21
Bentley Mulsanne tire sizes by year
- 2019 Bentley Mulsanne 265/45R20 / 265/40R21
- 2018 Bentley Mulsanne 265/45R20 / 265/40R21
- 2017 Bentley Mulsanne 265/45R20 / 265/40R21
- 2016 Bentley Mulsanne 265/45R20 / 265/40R21
- 2015 Bentley Mulsanne 265/45R20 / 265/40R21
- 2014 Bentley Mulsanne 265/45R20 / 265/40R21
- 2013 Bentley Mulsanne 265/45R20 / 265/40R21
- 2012 Bentley Mulsanne 265/45R20 / 265/40R21
- 2011 Bentley Mulsanne 265/45R20 / 265/40R21
- 1992 Bentley Mulsanne 235/70R15
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.