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Rolls-Royce Silver Dawn 4.6

(1955 model)

Brief specs of 1955 Rolls-Royce Silver Dawn 4.6

4-door 7-seater sedan (saloon), petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, 4566 cm3 / 278.6 cu in / 278.6 cu in, manual 4-speed transmission, rear wheel drive, 139 km/h / 86 mph / 86 mph top speed

units: metric UK US

Basic (general) data

Marque (make)Rolls-RoyceIssued from1955
ModelSilver Dawn 4.6Issued until
SerieSilver DawnNumber made
Model familyBody construction
Model codeBody designation
ManufacturerRolls-Royce Motor CarsCountryUK

Bodywork

Base platformNumber of doors4
Bodywork typesedan (saloon)Number of seats7
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length5170 mm / 203.5 in / 203.5 inTotal (curb) weight1866 kg / 4114 lb / 4114 lb
Width1780 mm / 70.1 in / 70.1 inDry weight
Height1680 mm / 66.1 in / 66.1 inLoad capacity
Wheelbase3050 mm / 120.1 in / 120.1 inGross (max.) weight
Track frontTowing weight
Track rearWeight distribution (front)
Ground clearanceFuel capacity108 l / 23.8 UK gal / 28.5 US gal
Length/wheelbase ratio1.7  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.54 m2 / 27.4 sq ft / 27.4 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders6
Engine Typestraight (inline) (Inline, 6 cylinder)Total number of valves12
Engine ManufacturerValves per cylinder2
Engine constructionBore
Fuelpetrol (gasoline)Stroke
Fuel detailsBore/Stroke ratio
Fuel supplyEngine displacement4566 cm3 / 278.6 cu in / 278.6 cu in
Engine Main bearingsUnitary capacity
Cam DesignCompression ratio
SumpwetMax. output power at
AspirationMax. torque at
Compressor typeMaximum rpm
IntercoolerMax. net output (power at the wheels)37.9 kW / 50.8 hp / 50.8 hp (est.)
CoolantSpecific output
Catalytic converterSpecific torque

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio
  Final gear (drive) ratio

Performance

Acceleration 0-50 mph (80 km/h)11.40 s / 11.40 s / 11.40 sTop (maximal) speed139 km/h / 86 mph / 86 mph
Acceleration 0-60 mph (97 km/h)16.20 s / 16.20 s / 16.20 sPower-to-weight ratio
Acceleration 0-100 km/hFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions
  Range

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering details
Turns lock-to-lockTurning circle
Suspension frontSuspension rear
Wheels frontWheels rear
Tyres front8.x15Tyres rear7.50-16
Brakes frontdrumBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsABS (anti-lock braking system)Braked area

Technical specifications and performance data of Rolls-Royce Silver Dawn 4.6

Infobox

Beyond basic auto insurance

In addition to having enough liability protection, there are some other coverages you should consider:

Collision: Pays for damage to your car resulting from a collision with another car, an object or as a result of flipping over. It also covers damage caused by potholes. Even if you are at fault for the accident, your collision coverage will reimburse you for the costs of repairing your car, minus the deductible. If you are not at fault, your insurance company may try to recover the amount they paid out from the other driver’s insurance company though a process called subrogation. If the company is successful, you will be reimbursed for the deductible.

Comprehensive: Reimburses you for loss due to theft or damage caused by something other than a collision with another car or object, such as fire, falling objects, missiles, explosion, earthquake, windstorm, hail, flood, vandalism, riot, or contact with animals such as birds or deer. Comprehensive insurance will also reimburse you if your windshield is cracked or shattered; some companies may waive the deductible on the glass portion of this coverage.

Uninsured and Underinsured Motorist Coverage: Reimburses you, a member of your family, or a designated driver if one of you is hit by an uninsured or hit-and-run driver. Underinsured motorist coverage comes into play when an at-fault driver has insufficient insurance to pay for your total loss. These coverages are required in 19 states, but available in all. It is important to purchase the same amount of coverage for uninsured/underinsured motorists as you have for liability to others.

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