Rolls Royce 20

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Rolls Royce 20HP Tyres


  • In the early 1920s when Rolls first made the 20 Horse Power they fitted 23” wheels. We would recommend the 32 x 4 1/2 (23" rim) 500 x 23 Lucas.
  • These early cars require a 23” flaps and Reinforced Inner Tube 815X105, and should run at 65psi.
  • By 1927 the 20 HP Rolls Royce fitted 21” well based wheels. We would suggest 5.25 x 21 Lucas, as a comfortable quiet tyre.
  • Depending on the body style we would suggest the tyre pressure 36psi with 21” wheeled 20 hp Rolls.
  • Some 20 HP Royces had 20” for which we would suggest 6.00 x 20 Lucas at 34psi depending on the body.
  • 20 HP Rolls Royce with 20” or 21” wheels need inner tubes, the 19/20 H RET Michelin we believe is the best. You will also need a rim tape.

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    Rolls Royce 20 Recommended Tyres


  1. 32x4 1/2 (23"rim) 500x23 Lucas
    i
    32 x 4 1/2 (23" rim) 500 x 23 Lucas

    Starting at $351.12 $292.60

  2. 525x21 Lucas
    i
    5.25 x 21 Lucas

    Starting at $210.00 $175.00

  3. 600x20 Lucas
    i
    6.00 x 20 Lucas
    ×
  4. Reinforced Tube 815X105
    i
    Reinforced Inner Tube 815X105

    Starting at $65.52 $54.60

  5. Michelin 19/20H RET Offset Valve Inner Tube
    i
    Michelin 19/20H RET Offset Valve Inner Tube

    Starting at $75.60 $63.00

  6. Other Options for Rolls Royce 20 Tyres


  7. 650/700x19 Ensign B5
    i
    6.50/7.00 x 19 Ensign B5

    Starting at $389.76 $324.80

  8. 600/650 x17 Ensign F4
    i
    5.25/5.50/6.00 x 20 Ensign F4

    Starting at $334.32 $278.60

  9. 32 x 4 1/2 (23" rim) Dunlop Triple Stud
    i
    32 x 4 1/2 (23" rim) Dunlop Triple Stud
    ×
  10. 525x21 Dunlop F4
    i
    5.25 x 21 Dunlop F4
    ×
  11. 525/550/600x20 Dunlop F4
    i
    5.25/5.50/6.00 x 20 Dunlop F4
    ×
  12. 600x20 Firestone
    i
    6.00 x 20 Firestone

    Starting at $438.90 $365.75

  13. 525x21 Firestone
    i
    5.25 x 21 Firestone

    Starting at $393.62 $328.02

  14. 6.50 X 20 FIRESTONE Whitewall
    i
    6.50 X 20 FIRESTONE Whitewall

    Starting at $733.66 $611.38

  15. 32x4 1/2 (23"rim) B.F.Goodrich
    i
    32 x 4 1/2 (23" rim) B.F.Goodrich

    Starting at $625.55 $521.29

  16. 600x20 B.F.Goodrich
    i
    6.00 x 20 B.F.Goodrich

    Starting at $439.82 $366.52

  17. 500/525x21 Excelsior Comp H
    i
    5.00/5.25 x 21 Excelsior Comp H

    Starting at $286.44 $238.70

  18. 33x5 (23"rim) Lucas
    i
    33 x 5 (23" rim) Lucas

    Starting at $367.92 $306.60

  19. 31x4 (23"rim) Lucas
    i
    31 x 4 (23"rim) Lucas

    Starting at $283.92 $236.60

  20. 33x5 (23"rim) Lucas
    i
    Set of 4 33 x5 (23" rim) Lucas

    Starting at $1,411.20 $1,176.00

  21. 33x5 (23"rim) Lucas
    i
    Set of 5 33 x 5 (23" rim) Lucas

    Starting at $1,747.20 $1,456.00

  22. 32x4 1/2 (23"rim) 500x23 Lucas
    i
    Set of 4 32 x4 1/2 (23" rim) 500 x 23 Lucas

    Starting at $1,344.00 $1,120.00

  23. 32x4 1/2 (23"rim) 500x23 Lucas
    i
    Set of 5 32 x 4 1/2 (23" rim) 500 x 23 Lucas

    Starting at $1,680.00 $1,400.00

  24. Set of 4 525x21 Lucas
    i
    Set of 4 5.25 x21 Lucas

    Starting at $772.80 $644.00

  25. Set of 5 525x21 Lucas
    i
    Set of 5 5.25 x 21 Lucas

    Starting at $949.20 $791.00

  26. 600 x 20 Lucas
    i
    Set of 4 6.00 x20 Lucas
    ×
  27. 600 x 20 Lucas
    i
    Set of 5 6.00 x 20 Lucas
    ×

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History of the Rolls Royce 20

The Rolls-Royce Twenty, constructed between 1922 and 1929, was the company's "small car" for the 1920s, alongside the 40/50 (Silver Ghost) and Phantom models. It was intended to attract to drivers, but many were sold to consumers with a chauffeur. For the 3127 cc vehicle, a new in-line 6 cylinder overhead valve engine was built. The cylinders were cast in one block, unlike the Silver Ghost engine, and the cylinder head was removable. A coil and magneto ignition system were both installed. Early automobiles featured three-speed transmissions with the gear lever in the centre of the car, but this was modified to a four-speed one with standard right-hand change in 1925. The power was sent to the back axle through a torque tube.

The huge chassis included stiff front and rear axles supported by half elliptic springs, with braking originally limited to the rear wheels. In 1925, four-wheel brakes with mechanical servos were introduced. The classic Rolls-Royce radiator with a triangle top was installed, and early models featured enamel-coated horizontal movable slats, which eventually changed to a nickel finish before becoming vertical.

A chassis cost £1100 in 1920, with a full tourer bodied automobile costing roughly £1600. The car could achieve 60 mph with coachwork to the manufacturer suggested weight, but many owners had big limousine bodies installed, which had an unavoidable negative effect on performance.


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