I had the same thing when i had those same tyres on- I wound up the rear preload two clicks and it went away :)

Got to try that as well ;-)

Thanks for the hint!

Also the tenere is a dual sport so it is not fitted with any steering dampers like sports bikes to stop these "speed wobbles". I have experienced the wobbles with the standard tyres when driving at high speeds on the tenere also and I�m confident its not down to any damage or 'issue' with the bike.

Waht is 'highspeed' for you? I'm talking about regular motorway speed, 120kmh (75mph). I hope it's from the tkc's, because this is something new I haven't experienced before.

I'm pretty sure it will be the tyres but theres no harm in being safer than sorry, consider what the guys here in previous posts told you to check over firstly, but i have had this wobble at 70mph+ on various dual sports / supermotos on motorways in the past, and i guess its expected pushing dual sports that speed without dampers, ultimately it is when you accelerate and the front wheel is not making solid contact with the road if i am correct.

Ok. But how do KTM or BMW handle this issue? I know for sure that with the big 1200GS you don't have this wobbles at 70mph (maybe at a later time). And the KTM 990 Adv shouldn't wobble either. Ok ok, they are a bit in a different league though ;-)

more weight = more tyre contact.

My old 2003 1150GSA used to shimmy like mad at 70mph on TKCs, even worse when they were worn. I think with the Z the biggest contributing factor to handlebar wobble (besides tyres and steering/suspension wear) is the bike has a sizable weight bias to the rear, it's arse heavy, which gets massively worse when you pack it up. I've found (like Peatbog) raising the rear with preload helps a lot, perhaps even dropping the forks a tad may help too?

I will definetely investigate in that and try the preload thing as soon as I get time. The wobble is not too bad though, but it's not the best thing either ;-)

I think its definitely a feature of the ten , due as stated to the saggy as std rear end , most of my miles were higher speed A roads and M'ways (why I changed to an S10) and it used to get a mild head shake on crossing lines /banding etc when pushing on (throttle open) it never developed into a tank slapper and generally sorted itself out, this was on both Siracs and T63s
The S10 is battleship stable in comparision.
PS I think the helmet buffeting the Ten can generate at such speeds doesnt help as it may cause the rider to hold on to the bars tighter too.