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Plus-eight

Rims for Morgan Plus Eight in Easy-to-Read Graphs

Average rim size per years

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Quick notes on Morgan Plus Eight rims

    • Average rim diameter: 15 in. (381 mm)
    • Average rim width: 6 in. (152 mm)
    • Max speed on original rims: 130 mph (210 km/h)
    • Load to one rim: 235 kg (518 lbs)
    • Rim diameter to car height: 31%
    • Power in 1 mm of rim width: 1.26 hp/mm (0.93 kW/mm)
    • Summary width of rims: 24 in. (610 mm)
    • Rim circumference: 47.1 in. per wheel (1196 mm)
    • Rimsley rating: 2 / 10

Original 1968 Morgan Plus Eight rim size

  • 3.5 EFI — 6 in. width and 15 in. diameter
  • 3.9 — 6 in. width and 15 in. diameter

    Possible tire width

  • 3.5 EFI — 175 mm min and 205 mm max
  • 3.9 — 175 mm min and 205 mm max

    • Disc diameter to power ratio

  • 3.5 EFI — 13 hp per 1 in. (9 kW/in)
  • 3.9 — 13 hp per 1 in. (9 kW/in)

    Vehicle Rim width and diameter Rim diameter to torque Rim width to diameter ratio Total rims circumference Total rims width
    3.5 EFI 6J x 15
    (152 x 381 mm)     		1.3 mm to 1 Nm 40% 188 in.
    (4775 mm)     		24 in.
    (610 mm)
    3.9 6J x 15
    (152 x 381 mm)     		1.2 mm to 1 Nm 40% 188 in.
    (4775 mm)     		24 in.
    (610 mm)
    Vehicle 3.5 EFI
    Rim width and diameter 6J x 15
    (152 x 381 mm)
    Rim diameter to torque 1.3 mm to 1 Nm
    Rim width to diameter ratio 40%
    Total rims circumference 188 in.
    (4775 mm)
    Total rims width 24 in.
    (610 mm)
    Vehicle 3.9
    Rim width and diameter 6J x 15
    (152 x 381 mm)
    Rim diameter to torque 1.2 mm to 1 Nm
    Rim width to diameter ratio 40%
    Total rims circumference 188 in.
    (4775 mm)
    Total rims width 24 in.
    (610 mm)