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Rims for BMW Z4 in Easy-to-Read Graphs

Average rim size per years

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Quick notes on BMW Z4 rims

    • Average rim diameter: 17.5 in. (445 mm)
    • Average rim width: 8 in. (203 mm)
    • Max speed on original rims: 155 mph (250 km/h)
    • Load to one rim: 369 kg (813 lbs)
    • Rim diameter to car height: 34%
    • Power in 1 mm of rim width: 1.47 hp/mm (1.08 kW/mm)
    • Rims diameter to fuel consumption: 12.36 mm to 1 mpg
    • Summary width of rims: 32 in. (813 mm)
    • Rim circumference: 55 in. per wheel (1397 mm)
    • Rimsley rating: 6 / 10

Original 2018 BMW Z4 rim size

  • 30i — 7 in. width and 17 in. diameter
  • M40i — 9 in. width and 18 in. diameter

    Possible tire width

  • 30i — 195 mm min and 225 mm max
  • M40i — 235 mm min and 265 mm max

    • Disc diameter to power ratio

  • 30i — 15 hp per 1 in. (11 kW/in)
  • M40i — 19 hp per 1 in. (14 kW/in)

    Vehicle Rim width and diameter Rim diameter to torque Rim width to diameter ratio Total rims circumference Total rims width
    30i 7J x 17
    (178 x 432 mm)     		1.1 mm to 1 Nm 41.2% 214 in.
    (5436 mm)     		28 in.
    (711 mm)
    M40i 9J x 18
    (229 x 457 mm)     		0.9 mm to 1 Nm 50% 226 in.
    (5740 mm)     		36 in.
    (914 mm)
    Vehicle 30i
    Rim width and diameter 7J x 17
    (178 x 432 mm)
    Rim diameter to torque 1.1 mm to 1 Nm
    Rim width to diameter ratio 41.2%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 28 in.
    (711 mm)
    Vehicle M40i
    Rim width and diameter 9J x 18
    (229 x 457 mm)
    Rim diameter to torque 0.9 mm to 1 Nm
    Rim width to diameter ratio 50%
    Total rims circumference 226 in.
    (5740 mm)
    Total rims width 36 in.
    (914 mm)

    Quick notes on BMW Z4 rims

      • Average rim diameter: 17.2 in. (437 mm)
      • Average rim width: 8 in. (203 mm)
      • Max speed on original rims: 155 mph (250 km/h)
      • Load to one rim: 365 kg (804 lbs)
      • Rim diameter to car height: 34%
      • Power in 1 mm of rim width: 1.21 hp/mm (0.89 kW/mm)
      • Rims diameter to fuel consumption: 14.1 mm to 1 mpg
      • Summary width of rims: 32 in. (813 mm)
      • Rim circumference: 54 in. per wheel (1372 mm)
      • Rimsley rating: 6 / 10

    Original 2013 BMW Z4 rim size

  • 35i — 8 in. width and 17 in. diameter
  • 20i — 8 in. width and 17 in. diameter
  • 28i — 8 in. width and 17 in. diameter
  • 18i — 8 in. width and 17 in. diameter
  • 35is — 8 in. width and 18 in. diameter

    Possible tire width

  • 35i — 215 mm min and 245 mm max
  • 20i — 215 mm min and 245 mm max
  • 28i — 215 mm min and 245 mm max
  • 18i — 215 mm min and 245 mm max
  • 35is — 215 mm min and 245 mm max

    • Disc diameter to power ratio

  • 35i — 18 hp per 1 in. (13 kW/in)
  • 20i — 11 hp per 1 in. (8 kW/in)
  • 28i — 14 hp per 1 in. (11 kW/in)
  • 18i — 9 hp per 1 in. (7 kW/in)
  • 35is — 19 hp per 1 in. (14 kW/in)

    Vehicle Rim width and diameter Rim diameter to torque Rim width to diameter ratio Total rims circumference Total rims width
    35i 8J x 17
    (203 x 432 mm)     		1.1 mm to 1 Nm 47.1% 214 in.
    (5436 mm)     		32 in.
    (813 mm)
    20i 8J x 17
    (203 x 432 mm)     		1.6 mm to 1 Nm 47.1% 214 in.
    (5436 mm)     		32 in.
    (813 mm)
    28i 8J x 17
    (203 x 432 mm)     		1.2 mm to 1 Nm 47.1% 214 in.
    (5436 mm)     		32 in.
    (813 mm)
    18i 8J x 17
    (203 x 432 mm)     		1.8 mm to 1 Nm 47.1% 214 in.
    (5436 mm)     		32 in.
    (813 mm)
    35is 8J x 18
    (203 x 457 mm)     		1 mm to 1 Nm 44.4% 226 in.
    (5740 mm)     		32 in.
    (813 mm)
    Vehicle 35i
    Rim width and diameter 8J x 17
    (203 x 432 mm)
    Rim diameter to torque 1.1 mm to 1 Nm
    Rim width to diameter ratio 47.1%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 32 in.
    (813 mm)
    Vehicle 20i
    Rim width and diameter 8J x 17
    (203 x 432 mm)
    Rim diameter to torque 1.6 mm to 1 Nm
    Rim width to diameter ratio 47.1%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 32 in.
    (813 mm)
    Vehicle 28i
    Rim width and diameter 8J x 17
    (203 x 432 mm)
    Rim diameter to torque 1.2 mm to 1 Nm
    Rim width to diameter ratio 47.1%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 32 in.
    (813 mm)
    Vehicle 18i
    Rim width and diameter 8J x 17
    (203 x 432 mm)
    Rim diameter to torque 1.8 mm to 1 Nm
    Rim width to diameter ratio 47.1%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 32 in.
    (813 mm)
    Vehicle 35is
    Rim width and diameter 8J x 18
    (203 x 457 mm)
    Rim diameter to torque 1 mm to 1 Nm
    Rim width to diameter ratio 44.4%
    Total rims circumference 226 in.
    (5740 mm)
    Total rims width 32 in.
    (813 mm)

    Quick notes on BMW Z4 rims

      • Average rim diameter: 17.2 in. (437 mm)
      • Average rim width: 8 in. (203 mm)
      • Max speed on original rims: 155 mph (250 km/h)
      • Load to one rim: 381 kg (840 lbs)
      • Rim diameter to car height: 34%
      • Power in 1 mm of rim width: 1.26 hp/mm (0.93 kW/mm)
      • Rims diameter to fuel consumption: 14.57 mm to 1 mpg
      • Summary width of rims: 32 in. (813 mm)
      • Rim circumference: 54 in. per wheel (1372 mm)
      • Rimsley rating: 6 / 10

    Original 2009 BMW Z4 rim size

  • 28i — 8 in. width and 17 in. diameter
  • 35i — 8 in. width and 17 in. diameter
  • 20i — 8 in. width and 17 in. diameter
  • 30i — 8 in. width and 17 in. diameter
  • 23i — 8 in. width and 17 in. diameter
  • 35 is — 8 in. width and 18 in. diameter

    Possible tire width

  • 28i — 215 mm min and 245 mm max
  • 35i — 215 mm min and 245 mm max
  • 20i — 215 mm min and 245 mm max
  • 30i — 215 mm min and 245 mm max
  • 23i — 215 mm min and 245 mm max
  • 35 is — 215 mm min and 245 mm max

    • Disc diameter to power ratio

  • 28i — 14 hp per 1 in. (11 kW/in)
  • 35i — 18 hp per 1 in. (13 kW/in)
  • 20i — 11 hp per 1 in. (8 kW/in)
  • 30i — 15 hp per 1 in. (11 kW/in)
  • 23i — 12 hp per 1 in. (9 kW/in)
  • 35 is — 19 hp per 1 in. (14 kW/in)

    Vehicle Rim width and diameter Rim diameter to torque Rim width to diameter ratio Total rims circumference Total rims width
    28i 8J x 17
    (203 x 432 mm)     		1.2 mm to 1 Nm 47.1% 214 in.
    (5436 mm)     		32 in.
    (813 mm)
    35i 8J x 17
    (203 x 432 mm)     		1.1 mm to 1 Nm 47.1% 214 in.
    (5436 mm)     		32 in.
    (813 mm)
    20i 8J x 17
    (203 x 432 mm)     		1.6 mm to 1 Nm 47.1% 214 in.
    (5436 mm)     		32 in.
    (813 mm)
    30i 8J x 17
    (203 x 432 mm)     		1.4 mm to 1 Nm 47.1% 214 in.
    (5436 mm)     		32 in.
    (813 mm)
    23i 8J x 17
    (203 x 432 mm)     		1.7 mm to 1 Nm 47.1% 214 in.
    (5436 mm)     		32 in.
    (813 mm)
    35 is 8J x 18
    (203 x 457 mm)     		1 mm to 1 Nm 44.4% 226 in.
    (5740 mm)     		32 in.
    (813 mm)
    Vehicle 28i
    Rim width and diameter 8J x 17
    (203 x 432 mm)
    Rim diameter to torque 1.2 mm to 1 Nm
    Rim width to diameter ratio 47.1%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 32 in.
    (813 mm)
    Vehicle 35i
    Rim width and diameter 8J x 17
    (203 x 432 mm)
    Rim diameter to torque 1.1 mm to 1 Nm
    Rim width to diameter ratio 47.1%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 32 in.
    (813 mm)
    Vehicle 20i
    Rim width and diameter 8J x 17
    (203 x 432 mm)
    Rim diameter to torque 1.6 mm to 1 Nm
    Rim width to diameter ratio 47.1%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 32 in.
    (813 mm)
    Vehicle 30i
    Rim width and diameter 8J x 17
    (203 x 432 mm)
    Rim diameter to torque 1.4 mm to 1 Nm
    Rim width to diameter ratio 47.1%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 32 in.
    (813 mm)
    Vehicle 23i
    Rim width and diameter 8J x 17
    (203 x 432 mm)
    Rim diameter to torque 1.7 mm to 1 Nm
    Rim width to diameter ratio 47.1%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 32 in.
    (813 mm)
    Vehicle 35 is
    Rim width and diameter 8J x 18
    (203 x 457 mm)
    Rim diameter to torque 1 mm to 1 Nm
    Rim width to diameter ratio 44.4%
    Total rims circumference 226 in.
    (5740 mm)
    Total rims width 32 in.
    (813 mm)

    Quick notes on BMW Z4 rims

      • Average rim diameter: 16.3 in. (414 mm)
      • Average rim width: 7 in. (178 mm)
      • Max speed on original rims: 155 mph (250 km/h)
      • Load to one rim: 324 kg (715 lbs)
      • Rim diameter to car height: 32%
      • Power in 1 mm of rim width: 1.14 hp/mm (0.84 kW/mm)
      • Rims diameter to fuel consumption: 15.92 mm to 1 mpg
      • Summary width of rims: 28 in. (711 mm)
      • Rim circumference: 51.2 in. per wheel (1300 mm)
      • Rimsley rating: 4 / 10

    Original 2006 BMW Z4 rim size

  • 2.5 si — 7 in. width and 16 in. diameter
  • 2.5i — 7 in. width and 16 in. diameter
  • 2.0i 16V — 6 in. width and 16 in. diameter
  • 3.0 si — 8 in. width and 17 in. diameter

    Possible tire width

  • 2.5 si — 195 mm min and 225 mm max
  • 2.5i — 195 mm min and 225 mm max
  • 2.0i 16V — 175 mm min and 205 mm max
  • 3.0 si — 215 mm min and 245 mm max

    • Disc diameter to power ratio

  • 2.5 si — 14 hp per 1 in. (10 kW/in)
  • 2.5i — 11 hp per 1 in. (8 kW/in)
  • 2.0i 16V — 9 hp per 1 in. (7 kW/in)
  • 3.0 si — 16 hp per 1 in. (11 kW/in)

    Vehicle Rim width and diameter Rim diameter to torque Rim width to diameter ratio Total rims circumference Total rims width
    2.5 si 7J x 16
    (178 x 406 mm)     		1.6 mm to 1 Nm 43.8% 201 in.
    (5105 mm)     		28 in.
    (711 mm)
    2.5i 7J x 16
    (178 x 406 mm)     		1.8 mm to 1 Nm 43.8% 201 in.
    (5105 mm)     		28 in.
    (711 mm)
    2.0i 16V 6J x 16
    (152 x 406 mm)     		2 mm to 1 Nm 37.5% 201 in.
    (5105 mm)     		24 in.
    (610 mm)
    3.0 si 8J x 17
    (203 x 432 mm)     		1.4 mm to 1 Nm 47.1% 214 in.
    (5436 mm)     		32 in.
    (813 mm)
    Vehicle 2.5 si
    Rim width and diameter 7J x 16
    (178 x 406 mm)
    Rim diameter to torque 1.6 mm to 1 Nm
    Rim width to diameter ratio 43.8%
    Total rims circumference 201 in.
    (5105 mm)
    Total rims width 28 in.
    (711 mm)
    Vehicle 2.5i
    Rim width and diameter 7J x 16
    (178 x 406 mm)
    Rim diameter to torque 1.8 mm to 1 Nm
    Rim width to diameter ratio 43.8%
    Total rims circumference 201 in.
    (5105 mm)
    Total rims width 28 in.
    (711 mm)
    Vehicle 2.0i 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 3.0 si
    Rim width and diameter 8J x 17
    (203 x 432 mm)
    Rim diameter to torque 1.4 mm to 1 Nm
    Rim width to diameter ratio 47.1%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 32 in.
    (813 mm)

    Quick notes on BMW Z4 rims

      • Average rim diameter: 17 in. (432 mm)
      • Average rim width: 7 in. (178 mm)
      • Max speed on original rims: 155 mph (250 km/h)
      • Load to one rim: 331 kg (731 lbs)
      • Rim diameter to car height: 34%
      • Power in 1 mm of rim width: 1.49 hp/mm (1.1 kW/mm)
      • Rims diameter to fuel consumption: 16.62 mm to 1 mpg
      • Summary width of rims: 28 in. (711 mm)
      • Rim circumference: 53.4 in. per wheel (1356 mm)
      • Rimsley rating: 4 / 10

    Original 2006 BMW Z4 rim size

  • 3.0 si — 7 in. width and 17 in. diameter

    Possible tire width

  • 3.0 si — 195 mm min and 225 mm max

    • Disc diameter to power ratio

  • 3.0 si — 16 hp per 1 in. (11 kW/in)

    Vehicle Rim width and diameter Rim diameter to torque Rim width to diameter ratio Total rims circumference Total rims width
    3.0 si 7J x 17
    (178 x 432 mm)     		1.4 mm to 1 Nm 41.2% 214 in.
    (5436 mm)     		28 in.
    (711 mm)
    Vehicle 3.0 si
    Rim width and diameter 7J x 17
    (178 x 432 mm)
    Rim diameter to torque 1.4 mm to 1 Nm
    Rim width to diameter ratio 41.2%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 28 in.
    (711 mm)

    Quick notes on BMW Z4 rims

      • Average rim diameter: 18 in. (457 mm)
      • Average rim width: 7 in. (178 mm)
      • Max speed on original rims: 155 mph (250 km/h)
      • Load to one rim: 354 kg (780 lbs)
      • Rim diameter to car height: 35%
      • Power in 1 mm of rim width: 1.93 hp/mm (1.42 kW/mm)
      • Rims diameter to fuel consumption: 17.58 mm to 1 mpg
      • Summary width of rims: 28 in. (711 mm)
      • Rim circumference: 56.5 in. per wheel (1435 mm)
      • Rimsley rating: 6 / 10

    Original 2006 BMW Z4 rim size

  • 3.2 — 7 in. width and 18 in. diameter

    Possible tire width

  • 3.2 — 195 mm min and 225 mm max

    • Disc diameter to power ratio

  • 3.2 — 19 hp per 1 in. (14 kW/in)

    Vehicle Rim width and diameter Rim diameter to torque Rim width to diameter ratio Total rims circumference Total rims width
    3.2 7J x 18
    (178 x 457 mm)     		1.3 mm to 1 Nm 38.9% 226 in.
    (5740 mm)     		28 in.
    (711 mm)
    Vehicle 3.2
    Rim width and diameter 7J x 18
    (178 x 457 mm)
    Rim diameter to torque 1.3 mm to 1 Nm
    Rim width to diameter ratio 38.9%
    Total rims circumference 226 in.
    (5740 mm)
    Total rims width 28 in.
    (711 mm)

    Quick notes on BMW Z4 rims

      • Average rim diameter: 18 in. (457 mm)
      • Average rim width: 7 in. (178 mm)
      • Max speed on original rims: 155 mph (250 km/h)
      • Load to one rim: 356 kg (786 lbs)
      • Rim diameter to car height: 36%
      • Power in 1 mm of rim width: 1.93 hp/mm (1.42 kW/mm)
      • Rims diameter to fuel consumption: 24.05 mm to 1 mpg
      • Summary width of rims: 28 in. (711 mm)
      • Rim circumference: 56.5 in. per wheel (1435 mm)
      • Rimsley rating: 6 / 10

    Original 2006 BMW Z4 rim size

  • 3.2 — 7 in. width and 18 in. diameter

    Possible tire width

  • 3.2 — 195 mm min and 225 mm max

    • Disc diameter to power ratio

  • 3.2 — 19 hp per 1 in. (14 kW/in)

    Vehicle Rim width and diameter Rim diameter to torque Rim width to diameter ratio Total rims circumference Total rims width
    3.2 7J x 18
    (178 x 457 mm)     		1.3 mm to 1 Nm 38.9% 226 in.
    (5740 mm)     		28 in.
    (711 mm)
    Vehicle 3.2
    Rim width and diameter 7J x 18
    (178 x 457 mm)
    Rim diameter to torque 1.3 mm to 1 Nm
    Rim width to diameter ratio 38.9%
    Total rims circumference 226 in.
    (5740 mm)
    Total rims width 28 in.
    (711 mm)

    Quick notes on BMW Z4 rims

      • Average rim diameter: 16.3 in. (414 mm)
      • Average rim width: 7.3 in. (185 mm)
      • Max speed on original rims: 152 mph (244 km/h)
      • Load to one rim: 336 kg (740 lbs)
      • Rim diameter to car height: 32%
      • Power in 1 mm of rim width: 1.07 hp/mm (0.79 kW/mm)
      • Rims diameter to fuel consumption: 12.94 mm to 1 mpg
      • Summary width of rims: 29 in. (737 mm)
      • Rim circumference: 51.2 in. per wheel (1300 mm)
      • Rimsley rating: 4 / 10

    Original 2003 BMW Z4 rim size

  • 2.2i — 7 in. width and 16 in. diameter
  • 2.5i — 7 in. width and 16 in. diameter
  • 3.0i — 8 in. width and 17 in. diameter

    Possible tire width

  • 2.2i — 195 mm min and 225 mm max
  • 2.5i — 195 mm min and 225 mm max
  • 3.0i — 215 mm min and 245 mm max

    • Disc diameter to power ratio

  • 2.2i — 11 hp per 1 in. (8 kW/in)
  • 2.5i — 12 hp per 1 in. (9 kW/in)
  • 3.0i — 14 hp per 1 in. (10 kW/in)

    Vehicle Rim width and diameter Rim diameter to torque Rim width to diameter ratio Total rims circumference Total rims width
    2.2i 7J x 16
    (178 x 406 mm)     		1.9 mm to 1 Nm 43.8% 201 in.
    (5105 mm)     		28 in.
    (711 mm)
    2.5i 7J x 16
    (178 x 406 mm)     		1.7 mm to 1 Nm 43.8% 201 in.
    (5105 mm)     		28 in.
    (711 mm)
    3.0i 8J x 17
    (203 x 432 mm)     		1.4 mm to 1 Nm 47.1% 214 in.
    (5436 mm)     		32 in.
    (813 mm)
    Vehicle 2.2i
    Rim width and diameter 7J x 16
    (178 x 406 mm)
    Rim diameter to torque 1.9 mm to 1 Nm
    Rim width to diameter ratio 43.8%
    Total rims circumference 201 in.
    (5105 mm)
    Total rims width 28 in.
    (711 mm)
    Vehicle 2.5i
    Rim width and diameter 7J x 16
    (178 x 406 mm)
    Rim diameter to torque 1.7 mm to 1 Nm
    Rim width to diameter ratio 43.8%
    Total rims circumference 201 in.
    (5105 mm)
    Total rims width 28 in.
    (711 mm)
    Vehicle 3.0i
    Rim width and diameter 8J x 17
    (203 x 432 mm)
    Rim diameter to torque 1.4 mm to 1 Nm
    Rim width to diameter ratio 47.1%
    Total rims circumference 214 in.
    (5436 mm)
    Total rims width 32 in.
    (813 mm)