Just fitted a 140/80x17 Karoo on my Tenere. Tested and is ok in mud stable on loose graded, stable in river beds, pretty good on dry tar and would imagine is as per knobbly on wet tar. ie, don't push your luck. Smiles better than the last two tyres which were Mitas CO2 but they have no equal in peat bogs but that's it. Longevity would be probably normal for me, which isna very long. lol.