woody , i have fix said discrepancy. now reads 1.60. btw the rear is 2.50. wasp, the rear tyre ( Michelin ) feels quite good on the tar, but you've got to be careful of the lack of side grip.goes without saying . the front knobby is the problem. i dont think there is a better tyre then the k60 f to handle both tar and dirt. pure knobby fronts walk all over the place on tar. and k60s and the like are not that flash in the mud. my answer is ......19' k60 or even a Metzler tourance, on the std wheel . and keep my 21' woody special with a pure knobby for serious off road work. with the high front guard this makes for an easy wheel swap. well thats my plan anyway.