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21

Rims for Caterham 21 in Easy-to-Read Graphs

Average rim size per years

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Quick notes on Caterham 21 rims

    • Average rim diameter: 16 in. (406 mm)
    • Average rim width: 6 in. (152 mm)
    • Max speed on original rims: 137 mph (220 km/h)
    • Load to one rim: 163 kg (358 lbs)
    • Rim diameter to car height: 35%
    • Power in 1 mm of rim width: 1.01 hp/mm (0.74 kW/mm)
    • Summary width of rims: 24 in. (610 mm)
    • Rim circumference: 50.2 in. per wheel (1275 mm)
    • Rimsley rating: 4 / 10

Original 1994 Caterham 21 rim size

  • 1.6 i 16V — 6 in. width and 16 in. diameter
  • 1.8 i 16V — 6 in. width and 16 in. diameter
  • 1.8 i 16V Supersport — 6 in. width and 16 in. diameter
  • 1.8 i 16V U347WC — 6 in. width and 16 in. diameter

    Possible tire width

  • 1.6 i 16V — 175 mm min and 205 mm max
  • 1.8 i 16V — 175 mm min and 205 mm max
  • 1.8 i 16V Supersport — 175 mm min and 205 mm max
  • 1.8 i 16V U347WC — 175 mm min and 205 mm max

    • Disc diameter to power ratio

  • 1.6 i 16V — 8 hp per 1 in. (6 kW/in)
  • 1.8 i 16V — 12 hp per 1 in. (9 kW/in)
  • 1.8 i 16V Supersport — 9 hp per 1 in. (6 kW/in)
  • 1.8 i 16V U347WC — 10 hp per 1 in. (7 kW/in)

    Vehicle Rim width and diameter Rim diameter to torque Rim width to diameter ratio Total rims circumference Total rims width
    1.6 i 16V 6J x 16
    (152 x 406 mm)     		2.7 mm to 1 Nm 37.5% 201 in.
    (5105 mm)     		24 in.
    (610 mm)
    1.8 i 16V 6J x 16
    (152 x 406 mm)     		2 mm to 1 Nm 37.5% 201 in.
    (5105 mm)     		24 in.
    (610 mm)
    1.8 i 16V Supersport 6J x 16
    (152 x 406 mm)     		2.4 mm to 1 Nm 37.5% 201 in.
    (5105 mm)     		24 in.
    (610 mm)
    1.8 i 16V U347WC 6J x 16
    (152 x 406 mm)     		2.3 mm to 1 Nm 37.5% 201 in.
    (5105 mm)     		24 in.
    (610 mm)
    Vehicle 1.6 i 16V
    Rim width and diameter 6J x 16
    (152 x 406 mm)
    Rim diameter to torque 2.7 mm to 1 Nm
    Rim width to diameter ratio 37.5%
    Total rims circumference 201 in.
    (5105 mm)
    Total rims width 24 in.
    (610 mm)
    Vehicle 1.8 i 16V
    Rim width and diameter 6J x 16
    (152 x 406 mm)
    Rim diameter to torque 2 mm to 1 Nm
    Rim width to diameter ratio 37.5%
    Total rims circumference 201 in.
    (5105 mm)
    Total rims width 24 in.
    (610 mm)
    Vehicle 1.8 i 16V Supersport
    Rim width and diameter 6J x 16
    (152 x 406 mm)
    Rim diameter to torque 2.4 mm to 1 Nm
    Rim width to diameter ratio 37.5%
    Total rims circumference 201 in.
    (5105 mm)
    Total rims width 24 in.
    (610 mm)
    Vehicle 1.8 i 16V U347WC
    Rim width and diameter 6J x 16
    (152 x 406 mm)
    Rim diameter to torque 2.3 mm to 1 Nm
    Rim width to diameter ratio 37.5%
    Total rims circumference 201 in.
    (5105 mm)
    Total rims width 24 in.
    (610 mm)