I switched wheels and tires on my W900A from the old tube type 10.00 x 22 to 11R x 24.5 tires and now the speedo doesn't read correctly. I found a speedo shop that can re-gear it but I need to know the diameter of a 10.00 x 22 tire. There was a really good article in the last Wheels of Time on road speed with a diameter chart but 10.00 x 22 was not listed. 11R x 24.5 is listed as 43.3" diameter.....10.00 x 22 should be close to 42" diameter but I wanted to verify with some experts. Thanks for the help!