Tank Slapper?

[Feet up]

Anyone experienced a tank slapper on the CT?
 
I ask the question as I have just been reading a report on the new water cooled GS and it appears the launch review in Bike magazine has only given the new bike a 4star rating due to an unexplainable tank slapper.

It appears the journalist had completed a 280 mile test and was returning to base down a flat straight road with cruise control set to 75MPH when the front wheel hit an imperfection in the road that set off a tank slapper so violent that it snapped the lock stop.

It also appears the tank slapper wasn’t an isolated incident. 

[Doc]

No, never even came close to any instability - solid as a rock. Can't say the same about my old ST1300's though, couldn't do over 120mph with a top box fitted - luckily never needed to

We'll have to wait until a few more new GS's hit the road, before we can confirm it's poor stability or not 

It does say in all manuals that as soon as you fit a top box, only 130kph is recommended. I've tried sticking to 130, but they insist on putting up 50, 70 and 100 signs everywhere 

[gonzohop]

I've only had the CT for a few weeks but I've given her a good thrashing around some very bumpy, twisty roads. No hint of a tank slapper. The only two things I noticed were the anti-wheelie kicking in (too much imho) when launching it over a good sized bump and the traction control failing to kick in quickly enough when the back-end stepped out sharpish on a damp corner. Luckily, a spare pair of underpants weren't too far away...

[Doc]

Originally Posted by gonzohop

Luckily, a spare pair of underpants weren't too far away...

 

[GS TRV]

I think the clue is in the bit about hitting the imperfection in the road. 

[Doc]

Originally Posted by GS TRV

I think the clue is in the bit about hitting the imperfection in the road. 

Going by the state of the roads today, if that is the cause of the tank slapper, BMW riders may soon be called 'slappers'.