Used Continental TKC80's on my Transalp from Santander to Malaga to Roscoff and the rear was needing replacement probably by Bordeaux on the return leg. Very little motorway use throughout, just twisties.
Transalp not very powerful so put it down to the block pattern tread.
Front was fine, good tyre while it lasts though...
I put the TCK80's on as sugested and put them through their paces, Have to say it's a good dual purpose tyre, excellent on the road and no worries off road either this weekend.
The tread looks like it would cause vibes on the road but not so, excellent feel and grip especially in corners. Transformed the DRZ for sure.