1997 Bentley Turbo R — T
The 1997 Bentley Turbo R T came from the factory equipped with 255/55R17 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.
255/55R17
| Section width | 255 mm |
|---|---|
| Aspect ratio (sidewall height) | 55% (140.3 mm) |
| Rim diameter | 17" |
| Overall tire diameter | ~28" |
| Revolutions per mile | ~719 |
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What this size means for your Bentley Turbo R
On the 1997 Bentley Turbo R T, the factory 255/55R17 measures about 28″ in overall diameter with a 140.3 mm (5.5″) sidewall, and completes roughly 719 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.
On a vehicle of this age, the Bentley Turbo R may have been refitted with a slightly different replacement size somewhere in its life, so check the current sidewall — not just the factory spec — before buying.
Other 1997 Bentley Turbo R trims
- Base Model 255/55R17
Bentley Turbo R tire sizes by year
- 1998 Bentley Turbo R 255/55R17
- 1996 Bentley Turbo R 255/55R17
- 1995 Bentley Turbo R 255/65R15 / 255/60R16
- 1994 Bentley Turbo R 255/65R15 / 255/60R16
- 1993 Bentley Turbo R 255/65R15
- 1992 Bentley Turbo R 255/65R15
- 1991 Bentley Turbo R 255/65R15
- 1990 Bentley Turbo R 255/65R15
- 1989 Bentley Turbo R 255/65R15
- 1988 Bentley Turbo R 255/65R15
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.