Rolls Royce 20

Rolls Royce 20HP Tyres

  • In the early 1920s when Rolls first made the 20 Horse Power they fitted 23” wheels. We would recommend 32X4½ Lucas.
  • These early cars need a 23” flaps and Reinforced 815X105 Inner tubes. And should run at 65psi.
  • By 1927 the 20 HP Rolls Royce fitted 21” well based wheels. We would suggest 525X21 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 600X20 Lucas at 34psi depending on the body.
  • 20 HP Rolls Royce with 20” or 21” wheels need inner tubes 19/20 H RET Michelin is we believe the best. You also need a rim tape.

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    Rolls Royce 20 Recommended Tyres


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

    Starting at $351.12 $292.60

  2. 525x21 Lucas
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    5.25 x 21 Lucas

    Starting at $193.20 $161.00

  3. 650/700x19 Ensign B5
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    6.50/7.00 x 19 Ensign B5

    Starting at $332.64 $277.20

  4. 600/650 x17 Ensign F4
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    5.25/5.50/6.00 x 20 Ensign F4

    Starting at $327.60 $273.00

  5. 600x20 Lucas
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    6.00 x 20 Lucas

    Starting at $283.92 $236.60

  6. Michelin 19/20H RET Offset Valve Inner Tube
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    Michelin 19/20H RET Offset Valve Inner Tube

    Starting at $55.44 $46.20

  7. Other Options for Rolls Royce 20


  8. 32x4 1/2 (23"rim) 500x23 Lucas
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    Set of 4 32 x4 1/2 (23" rim) 500 x 23 Lucas

    Starting at $1,344.00 $1,120.00

  9. 32x4 1/2 (23"rim) 500x23 Lucas
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    Set of 5 32 x 4 1/2 (23" rim) 500 x 23 Lucas

    Starting at $1,680.00 $1,400.00

  10. Set of 5 525x21 Lucas
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    Set of 5 5.25 x 21 Lucas

    Starting at $840.00 $700.00

  11. Set of 4 525x21 Lucas
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    Set of 4 5.25 x21 Lucas

    Starting at $747.60 $623.00

  12. 525x21 Firestone
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    5.25 x 21 Firestone

    Starting at $367.92 $306.60

  13. 525x21 Dunlop F4
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    5.25 x 21 Dunlop F4
    ×
  14. 600 x 20 Lucas
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    Set of 4 6.00 x20 Lucas

    Starting at $1,092.00 $910.00

  15. 32 x 4 1/2 (23" rim) Dunlop Triple Stud
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    32 x 4 1/2 (23" rim) Dunlop Triple Stud
    ×
  16. 600 x 20 Lucas
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    Set of 5 6.00 x 20 Lucas

    Starting at $1,344.00 $1,120.00

  17. 32x4 1/2 (23"rim) B.F.Goodrich
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    32 x 4 1/2 (23" rim) B.F.Goodrich

    Starting at $546.00 $455.00

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Rolls Royce Twenty History

The Rolls-Royce Twenty built between 1922 and 1929 was Rolls-Royce's "small car" for the 1920s and was produced alongside the 40/50 (Silver Ghost) and Phantom models. It was intended to appeal to owner drivers but many were sold to customers with chauffeurs.

A new in-line 6 cylinder overhead valve engine was designed for the car of 3127 cc. Unlike the Silver Ghost engine, the cylinders were cast in one block and the cylinder head was detachable. Both a coil and magneto ignition system were fitted. The early cars had 3 speed gearboxes with the gear lever in the centre of the car but this changed in 1925 to a four speed unit with traditional right hand change. A torque tube was used to transmit the power to the rear axle.

The substantial chassis had rigid front and rear axles suspended by half elliptic springs, with braking initially only on the rear wheels. Four wheel brakes with mechanical servo were introduced in 1925. The traditional Rolls-Royce radiator with triangular top was fitted and early examples had enamel finished horizontal moveable slats, later changing to a nickel finish and finally becoming vertical.

In 1920 a chassis cost £1100 with, typically, a complete tourer bodied car costing around £1600. With coachwork to the factory recommended weight the car could reach 60 mph but many owners had large limousine bodies fitted with the inevitable detrimental effect on performance.


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