Alvis 12-50

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1926 Alvis 12-50

1926 Alvis 12-50


Alvis 12/50 Tyres



  • The Alvis 12/50 was released in 1923 and was in production until 1932, releasing a series of different versions, with 3705 made in total.
  • When the 12/50 Alvis first came out it fitted 23” wheels, for which we would suggest the 31 x 4 (23"rim) Lucas.
  • These tyres need 815X105 reinforced innertubes and 23” flaps, with pressure set at 65psi.
  • In the mid 1920’s it fitted 21” wheels for which we would suggest the 4.40/4.50 x 21 Lucas tyre.
  • Later they fitted 20” wheels and Longstone recommends the 4.75/5.00 x 20 Lucas.
  • We suggest 20/21 CD RET Michelin reinforced innertubes and rim tapes.

16 Items

per page

    Alvis 12-50 Recommended Tyres


  1. 475/500x20 Lucas
    i
    4.75/5.00 x 20 Lucas

    Starting at £600.00 £500.00

  2. 440/450x21 Lucas
    i
    4.40/4.50 x 21 Lucas

    Starting at £138.00 £115.00

  3. 31x4 (23"rim) Lucas
    i
    31 x 4 (23"rim) Lucas

    Starting at £226.80 £189.00

  4. Reinforced Tube 815X105
    i
    Reinforced Inner Tube 815X105

    Starting at £46.80 £39.00

  5. Michelin 20/21CD RET Offset Valve Inner Tube
    i
    Michelin 20/21CD RET Offset Valve Inner Tube

    Starting at £44.40 £37.00


  6. Other Options for Alvis 12-50 Tyres


  7. 440/450x21 Firestone
    i
    4.40/4.50 x 21 Firestone

    Starting at £277.20 £231.00

  8. 475/500x20 Firestone
    i
    4.75/5.00 x 20 Firestone

    Starting at £267.60 £223.00

  9. 4.40/4.50 x 21 Firestone Whitewall
    i
    4.40/4.50 x 21 Firestone Whitewall

    Starting at £350.40 £292.00

  10. 450/475/500x20 Dunlop B5
    i
    4.50/4.75/5.00 x 20 Dunlop B5
    ×
  11. 450/475x16 Firestone
    i
    4.50/4.75 x 21 Dunlop F4
    ×
  12. 650/700x19 Ensign B5
    i
    4.50/4.75/5.00x20 Ensign B5

    Starting at £178.80 £149.00

  13. 475/500x20 Excelsior
    i
    4.75/5.00 x 20 Excelsior

    Starting at £192.00 £160.00

  14. Set of 4 440/450x21 Lucas
    i
    Set of 4 4.40/4.50 x21 Lucas

    Starting at £528.00 £440.00

  15. Set of 5 440/450x21 Lucas
    i
    Set of 5 4.40/4.50x21 Lucas

    Starting at £600.00 £500.00

  16. Set of 4 475/500x20 Lucas
    i
    Set of 4 4.75/5.00 x20 Lucas

    Starting at £600.00 £500.00

  17. Jeu de 5 475/500x20 Lucas
    i
    Set of 5 4.75/5.00 x 20 Lucas

    Starting at £720.00 £600.00

16 Items

per page

History of the Alvis 12/50

The Alvis 12/50 is an automobile that was launched in 1923 by the British Alvis car manufacturer. It went through several iterations, the last of which was produced in 1932. A variety of factory bodies were available in two and four-seat configurations, with open or closed bodies. The initial versions were named SA and SB, with the SB using a 1496 cc 4-cylinder overhead valve engine. The SA was often equipped with two-seat bodywork, frequently in the traditional so-called "ducks back" form, so named because of its pointed rear end, which was believed to resemble that of a duck. The 12/50s were all equipped with a four-speed non-synchromesh transmission.


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