2009-2011 WR250F / 450F
(Does not work on WR250R / X models)
- Push the SLCT1 and the RST buttons simultaneously and hold for 2 seconds to enter into the tire diameter correction mode.
- The display should now show 100:0C (stock)
- Press the SLCT2 button until it reads your newly desired correction factor XX:XC.
- Push the SLCT1 and RST buttons simultaneously for 2 seconds to exit the tire diameter correction mode.
Calculate new tire diameter and determine what percentage of the stock size it is:
- Tire Diameter = (Section Width X Aspect Ratio X 2 / 25.4)+ Rim Diameter
- 17” Supermoto: 120/70HR17
- 120mm x .7 x 2 = 168mm / 25.4 = 6.61″ + 17″= 23.61” x 25.4 = 599.80mm
- 21” Stock Dirt: 80/100-21
- 80mm x 1 x 2 = 160mm / 25.4 = 6.29” + 21” = 27.29” x 25.4 = 693.40mm
2012-2015 WR250F / WR450F
(Does not work on WR250R / X models)
- Remove headlight
- Drop the boot of the back of the speedo harness, cut and seal the grey loop wire.
- Put it all back together and install on the bike
- turn the bike on,
- hold rst + slt1 buttons (100c will appear),
- press slt1/slt2 until you get the correct number for your tire (should be 85-86 depending on your tire) use tire information to work out your diameter.
- hold rst+slt1 again to continue normal function.
100 is 21” size and 86 is 17” size