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
1989 Ski-Doo
Formula Plus
  • Drive Type: Chain
  • Spark Plug: BR9ES
  • Track Length: 114 In.
  • Lug Height: 0.5 in.
  • Battery: YTX14-BS
  • Headlight Bulb: 22309
  • Taillight Bulb: 22323
  • Drive Belt Width: 1 3/8 in.
  • Wear Rods: 031837
For reference only, please consult your owner’s manual to confirm your sizes
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  • Front TKC 80 90/90-21 Tire
    exact fit
    $115.97
    Free Same Day Shipping
    Part #: DS64Z12839Z1 Mfg Part #: 02405670000

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