To really throw the cat amongst the dragons:

As probably already mentioned in other posts I run and am happy with TKC's.
HOWEVER -the grass is always greener etc etc.
Anybody out there got or have tried the metzler karoo T - note the T.
Yes they are only available in 140/80/17 I believe, but in my memory from another post, the tenere can take the 140.
At the time of the post I remember calculating the speedo error at only 2mph so that is no problem.

__________________
Work hard, rock hard, eat hard, sleep hard, grow big an wear glasses if you need em.