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
1985 BMW
K100RT
For reference only, please consult your owner’s manual to confirm your sizes
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  • exact fit
    Rear D606 130/90R-17 Tire
    5.0 star rating (1)
    $120.58
    Part #: 540386 Mfg Part #: 4516-2297

  • exact fit
    Front D404 100/90H-18 Blackwall Tire
    Part #: 542531 Mfg Part #: 45605299

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