how to measure

Width is measured in a straight line from the furthest point on one sidewall, across the tread, to the furthest point on the opposite sidewall.

The aspect ratio is the height of the tire sidewall. A smaller number means a lower profile, and the height-to-width ratio is shown as a percent.

Rim diameter is the diameter of the rim/wheel on which the tire will be mounted, in inches.

tire width
tire aspect ratio
rim diameter
1987 BMW
K75RT
  • Drive Type: Shaft
  • Front Tire Size: 110/90-18
  • Rear Tire Size: 130/90-18
  • Battery: YUAM2230B
For reference only, please consult your owner’s manual to confirm your sizes
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  • Rear D606 130/90R-18 Tire
    exact fit
    4.8 star rating (49)
    $142.99
    Free Same Day Shipping
    Part #: 642966 Mfg Part #: 45162910

  • Front D404 110/90H-18 Blackwall Tire
    exact fit
    4.6 star rating (499)
    $124.99
    Free Same Day Shipping
    Part #: 542532 Mfg Part #: 45605475

Viewing Results 1 - 2 of 2