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BMW Z4 Tire Sizes in Simple-to-Read Graphs

Tire width for different generations

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Quick notes on BMW Z4 tires

    • Min-max tire width: 225—255 mm
    • Min-max wheel diameter: R17—R18
    • Min-max sidewall height: 102—113 mm
    • Tire width difference from average: -10.2%
    • Average wheel height: 658 mm
    • Tire width per 1 hp: 0.9 mm / 1 hp
    • Weight per 1 mm of tire width: 6 kg / 1 mm
    • Load to 1 tire: 363 kg / 801 lbs
    • Power to 1 tire: 66 hp / 49 kW
    • Tiremain rating: 8 / 10

Tire width to car width ratio

  • Average tire width: 235 mm;
    Car body width: 1864 mm;
    Car width to tyre width: 13%;

    • Whole wheel height (in. and mm)

  • Disc height: 440 mm;
    Tire height: 109 mm;
    Wheel height: 658 mm;

    Tire width to power ratio

  • 30i — 0.9 mm per 1 hp (1.2 mm/kW)
  • 20i — 1.1 mm per 1 hp (1.6 mm/kW)
  • M40i — 0.8 mm per 1 hp (1 mm/kW)

    Vehicle Tire width / profile height Whole tire height Engine сс to 1 tire Tire circumference Summary tire width
    30i 225 / 113 mm 657 mm
    (25.9 in)     		500 cc (0.5 L) 2064 mm
    (81.3 in)     		900 mm
    (35.4 in)
    20i 225 / 113 mm 657 mm
    (25.9 in)     		500 cc (0.5 L) 2064 mm
    (81.3 in)     		900 mm
    (35.4 in)
    M40i 255 / 102 mm 661 mm
    (26 in)     		750 cc (0.75 L) 2077 mm
    (81.8 in)     		1020 mm
    (40.2 in)
    Vehicle 30i
    Tire width / profile height 225 / 113 mm
    Whole tire height 657 mm (25.9 in)
    Engine сс to 1 tire 500 cc (0.5 L)
    Tire circumferencee 2064 mm (81.3 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 20i
    Tire width / profile height 225 / 113 mm
    Whole tire height 657 mm (25.9 in)
    Engine сс to 1 tire 500 cc (0.5 L)
    Tire circumferencee 2064 mm (81.3 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle M40i
    Tire width / profile height 255 / 102 mm
    Whole tire height 661 mm (26 in)
    Engine сс to 1 tire 750 cc (0.75 L)
    Tire circumferencee 2077 mm (81.8 in)
    Summary tire width 1020 mm (40.2 in)

    Quick notes on BMW Z4 tires

      • Min-max tire width: 225 mm
      • Min-max wheel diameter: R17—R18
      • Min-max sidewall height: 90—101 mm
      • Tire width difference from average: -6.2%
      • Average wheel height: 635 mm
      • Tire width per 1 hp: 0.9 mm / 1 hp
      • Weight per 1 mm of tire width: 6 kg / 1 mm
      • Load to 1 tire: 365 kg / 804 lbs
      • Power to 1 tire: 62 hp / 46 kW
      • Tiremain rating: 8 / 10

    Tire width to car width ratio

  • Average tire width: 229 mm;
    Car body width: 1818 mm;
    Car width to tyre width: 13%;

    • Whole wheel height (in. and mm)

  • Disc height: 438 mm;
    Tire height: 103 mm;
    Wheel height: 644 mm;

    Tire width to power ratio

  • 35i — 0.7 mm per 1 hp (1 mm/kW)
  • 20i — 1.2 mm per 1 hp (1.7 mm/kW)
  • 28i — 0.9 mm per 1 hp (1.3 mm/kW)
  • 18i — 1.4 mm per 1 hp (2 mm/kW)
  • 35is — 0.7 mm per 1 hp (0.9 mm/kW)

    Vehicle Tire width / profile height Whole tire height Engine сс to 1 tire Tire circumference Summary tire width
    35i 225 / 101 mm 634 mm
    (25 in)     		745 cc (0.75 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    20i 225 / 101 mm 634 mm
    (25 in)     		499 cc (0.5 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    28i 225 / 101 mm 634 mm
    (25 in)     		499 cc (0.5 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    18i 225 / 101 mm 634 mm
    (25 in)     		499 cc (0.5 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    35is 225 / 90 mm 637 mm
    (25.1 in)     		745 cc (0.75 L) 2001 mm
    (78.8 in)     		900 mm
    (35.4 in)
    Vehicle 35i
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 745 cc (0.75 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 20i
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 499 cc (0.5 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 28i
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 499 cc (0.5 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 18i
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 499 cc (0.5 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 35is
    Tire width / profile height 225 / 90 mm
    Whole tire height 637 mm (25.1 in)
    Engine сс to 1 tire 745 cc (0.75 L)
    Tire circumferencee 2001 mm (78.8 in)
    Summary tire width 900 mm (35.4 in)

    Quick notes on BMW Z4 tires

      • Min-max tire width: 225 mm
      • Min-max wheel diameter: R17—R18
      • Min-max sidewall height: 90—101 mm
      • Tire width difference from average: -6.2%
      • Average wheel height: 635 mm
      • Tire width per 1 hp: 0.9 mm / 1 hp
      • Weight per 1 mm of tire width: 7 kg / 1 mm
      • Load to 1 tire: 381 kg / 840 lbs
      • Power to 1 tire: 64 hp / 47 kW
      • Tiremain rating: 8 / 10

    Tire width to car width ratio

  • Average tire width: 227 mm;
    Car body width: 1806 mm;
    Car width to tyre width: 13%;

    • Whole wheel height (in. and mm)

  • Disc height: 437 mm;
    Tire height: 101 mm;
    Wheel height: 640 mm;

    Tire width to power ratio

  • 28i — 0.9 mm per 1 hp (1.3 mm/kW)
  • 35i — 0.7 mm per 1 hp (1 mm/kW)
  • 20i — 1.2 mm per 1 hp (1.7 mm/kW)
  • 30i — 0.9 mm per 1 hp (1.2 mm/kW)
  • 23i — 1.1 mm per 1 hp (1.5 mm/kW)
  • 35 is — 0.7 mm per 1 hp (0.9 mm/kW)

    Vehicle Tire width / profile height Whole tire height Engine сс to 1 tire Tire circumference Summary tire width
    28i 225 / 101 mm 634 mm
    (25 in)     		499 cc (0.5 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    35i 225 / 101 mm 634 mm
    (25 in)     		745 cc (0.75 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    20i 225 / 101 mm 634 mm
    (25 in)     		499 cc (0.5 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    30i 225 / 101 mm 634 mm
    (25 in)     		749 cc (0.75 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    23i 225 / 101 mm 634 mm
    (25 in)     		624 cc (0.62 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    35 is 225 / 90 mm 637 mm
    (25.1 in)     		745 cc (0.75 L) 2001 mm
    (78.8 in)     		900 mm
    (35.4 in)
    Vehicle 28i
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 499 cc (0.5 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 35i
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 745 cc (0.75 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 20i
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 499 cc (0.5 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 30i
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 749 cc (0.75 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 23i
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 624 cc (0.62 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 35 is
    Tire width / profile height 225 / 90 mm
    Whole tire height 637 mm (25.1 in)
    Engine сс to 1 tire 745 cc (0.75 L)
    Tire circumferencee 2001 mm (78.8 in)
    Summary tire width 900 mm (35.4 in)

    Quick notes on BMW Z4 tires

      • Min-max tire width: 205—225 mm
      • Min-max wheel diameter: R16—R17
      • Min-max sidewall height: 101—113 mm
      • Tire width difference from average: -4.1%
      • Average wheel height: 632 mm
      • Tire width per 1 hp: 1.1 mm / 1 hp
      • Weight per 1 mm of tire width: 6 kg / 1 mm
      • Load to 1 tire: 324 kg / 715 lbs
      • Power to 1 tire: 51 hp / 38 kW
      • Tiremain rating: 6 / 10

    Tire width to car width ratio

  • Average tire width: 226 mm;
    Car body width: 1800 mm;
    Car width to tyre width: 13%;

    • Whole wheel height (in. and mm)

  • Disc height: 432 mm;
    Tire height: 103 mm;
    Wheel height: 639 mm;

    Tire width to power ratio

  • 2.5 si — 1 mm per 1 hp (1.4 mm/kW)
  • 3.0 si — 0.8 mm per 1 hp (1.2 mm/kW)
  • 2.5i — 1.3 mm per 1 hp (1.7 mm/kW)
  • 2.0i 16V — 1.4 mm per 1 hp (1.9 mm/kW)

    Vehicle Tire width / profile height Whole tire height Engine сс to 1 tire Tire circumference Summary tire width
    2.5 si 225 / 113 mm 631 mm
    (24.8 in)     		624 cc (0.62 L) 1982 mm
    (78 in)     		900 mm
    (35.4 in)
    3.0 si 225 / 101 mm 634 mm
    (25 in)     		749 cc (0.75 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    2.5i 225 / 113 mm 631 mm
    (24.8 in)     		624 cc (0.62 L) 1982 mm
    (78 in)     		900 mm
    (35.4 in)
    2.0i 16V 205 / 113 mm 632 mm
    (24.9 in)     		499 cc (0.5 L) 1985 mm
    (78.1 in)     		820 mm
    (32.3 in)
    Vehicle 2.5 si
    Tire width / profile height 225 / 113 mm
    Whole tire height 631 mm (24.8 in)
    Engine сс to 1 tire 624 cc (0.62 L)
    Tire circumferencee 1982 mm (78 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 3.0 si
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 749 cc (0.75 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 2.5i
    Tire width / profile height 225 / 113 mm
    Whole tire height 631 mm (24.8 in)
    Engine сс to 1 tire 624 cc (0.62 L)
    Tire circumferencee 1982 mm (78 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 2.0i 16V
    Tire width / profile height 205 / 113 mm
    Whole tire height 632 mm (24.9 in)
    Engine сс to 1 tire 499 cc (0.5 L)
    Tire circumferencee 1985 mm (78.1 in)
    Summary tire width 820 mm (32.3 in)

    Quick notes on BMW Z4 tires

      • Min-max tire width: 225 mm
      • Min-max wheel diameter: R17
      • Min-max sidewall height: 101 mm
      • Tire width difference from average: -6.2%
      • Average wheel height: 635 mm
      • Tire width per 1 hp: 0.8 mm / 1 hp
      • Weight per 1 mm of tire width: 6 kg / 1 mm
      • Load to 1 tire: 331 kg / 731 lbs
      • Power to 1 tire: 66 hp / 49 kW
      • Tiremain rating: 8 / 10

    Tire width to car width ratio

  • Average tire width: 226 mm;
    Car body width: 1799 mm;
    Car width to tyre width: 13%;

    • Whole wheel height (in. and mm)

  • Disc height: 432 mm;
    Tire height: 103 mm;
    Wheel height: 638 mm;

    Tire width to power ratio

  • 3.0 si — 0.8 mm per 1 hp (1.2 mm/kW)

    Vehicle Tire width / profile height Whole tire height Engine сс to 1 tire Tire circumference Summary tire width
    3.0 si 225 / 101 mm 634 mm
    (25 in)     		749 cc (0.75 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    Vehicle 3.0 si
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 749 cc (0.75 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)

    Quick notes on BMW Z4 tires

      • Min-max tire width: 225 mm
      • Min-max wheel diameter: R18
      • Min-max sidewall height: 101 mm
      • Tire width difference from average: -6.2%
      • Average wheel height: 660 mm
      • Tire width per 1 hp: 0.7 mm / 1 hp
      • Weight per 1 mm of tire width: 6 kg / 1 mm
      • Load to 1 tire: 354 kg / 780 lbs
      • Power to 1 tire: 86 hp / 63 kW
      • Tiremain rating: 8 / 10

    Tire width to car width ratio

  • Average tire width: 226 mm;
    Car body width: 1798 mm;
    Car width to tyre width: 13%;

    • Whole wheel height (in. and mm)

  • Disc height: 433 mm;
    Tire height: 103 mm;
    Wheel height: 639 mm;

    Tire width to power ratio

  • 3.2 — 0.7 mm per 1 hp (0.9 mm/kW)

    Vehicle Tire width / profile height Whole tire height Engine сс to 1 tire Tire circumference Summary tire width
    3.2 225 / 101 mm 660 mm
    (26 in)     		812 cc (0.81 L) 2073 mm
    (81.6 in)     		900 mm
    (35.4 in)
    Vehicle 3.2
    Tire width / profile height 225 / 101 mm
    Whole tire height 660 mm (26 in)
    Engine сс to 1 tire 812 cc (0.81 L)
    Tire circumferencee 2073 mm (81.6 in)
    Summary tire width 900 mm (35.4 in)

    Quick notes on BMW Z4 tires

      • Min-max tire width: 225 mm
      • Min-max wheel diameter: R18
      • Min-max sidewall height: 101 mm
      • Tire width difference from average: -6.2%
      • Average wheel height: 660 mm
      • Tire width per 1 hp: 0.7 mm / 1 hp
      • Weight per 1 mm of tire width: 6 kg / 1 mm
      • Load to 1 tire: 356 kg / 786 lbs
      • Power to 1 tire: 86 hp / 63 kW
      • Tiremain rating: 8 / 10

    Tire width to car width ratio

  • Average tire width: 225 mm;
    Car body width: 1798 mm;
    Car width to tyre width: 13%;

    • Whole wheel height (in. and mm)

  • Disc height: 434 mm;
    Tire height: 103 mm;
    Wheel height: 640 mm;

    Tire width to power ratio

  • 3.2 — 0.7 mm per 1 hp (0.9 mm/kW)

    Vehicle Tire width / profile height Whole tire height Engine сс to 1 tire Tire circumference Summary tire width
    3.2 225 / 101 mm 660 mm
    (26 in)     		812 cc (0.81 L) 2073 mm
    (81.6 in)     		900 mm
    (35.4 in)
    Vehicle 3.2
    Tire width / profile height 225 / 101 mm
    Whole tire height 660 mm (26 in)
    Engine сс to 1 tire 812 cc (0.81 L)
    Tire circumferencee 2073 mm (81.6 in)
    Summary tire width 900 mm (35.4 in)

    Quick notes on BMW Z4 tires

      • Min-max tire width: 205—225 mm
      • Min-max wheel diameter: R16—R17
      • Min-max sidewall height: 101—113 mm
      • Tire width difference from average: -3.2%
      • Average wheel height: 633 mm
      • Tire width per 1 hp: 1.1 mm / 1 hp
      • Weight per 1 mm of tire width: 6 kg / 1 mm
      • Load to 1 tire: 336 kg / 740 lbs
      • Power to 1 tire: 50 hp / 37 kW
      • Tiremain rating: 6 / 10

    Tire width to car width ratio

  • Average tire width: 225 mm;
    Car body width: 1796 mm;
    Car width to tyre width: 13%;

    • Whole wheel height (in. and mm)

  • Disc height: 432 mm;
    Tire height: 104 mm;
    Wheel height: 639 mm;

    Tire width to power ratio

  • 2.2i — 1.2 mm per 1 hp (1.6 mm/kW)
  • 2.5i — 1.2 mm per 1 hp (1.6 mm/kW)
  • 3.0i — 1 mm per 1 hp (1.3 mm/kW)

    Vehicle Tire width / profile height Whole tire height Engine сс to 1 tire Tire circumference Summary tire width
    2.2i 205 / 113 mm 632 mm
    (24.9 in)     		543 cc (0.54 L) 1985 mm
    (78.1 in)     		820 mm
    (32.3 in)
    2.5i 225 / 113 mm 631 mm
    (24.8 in)     		624 cc (0.62 L) 1982 mm
    (78 in)     		900 mm
    (35.4 in)
    3.0i 225 / 101 mm 634 mm
    (25 in)     		745 cc (0.75 L) 1992 mm
    (78.4 in)     		900 mm
    (35.4 in)
    Vehicle 2.2i
    Tire width / profile height 205 / 113 mm
    Whole tire height 632 mm (24.9 in)
    Engine сс to 1 tire 543 cc (0.54 L)
    Tire circumferencee 1985 mm (78.1 in)
    Summary tire width 820 mm (32.3 in)
    Vehicle 2.5i
    Tire width / profile height 225 / 113 mm
    Whole tire height 631 mm (24.8 in)
    Engine сс to 1 tire 624 cc (0.62 L)
    Tire circumferencee 1982 mm (78 in)
    Summary tire width 900 mm (35.4 in)
    Vehicle 3.0i
    Tire width / profile height 225 / 101 mm
    Whole tire height 634 mm (25 in)
    Engine сс to 1 tire 745 cc (0.75 L)
    Tire circumferencee 1992 mm (78.4 in)
    Summary tire width 900 mm (35.4 in)

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