On bad roads (read belgian road) the headlights of my new car are trumbling. Dealer will replace them under warranty but does anybody else have this exerience?

Thanks for your comments. 2017 Range Rover Vogue TDV8 silicon silver
2011 Defender 90 2.4 TDCI Nara Exclusive
2008 Porsche 911 997 4S Black/black
1970 Porsche 911T 2.2 in restauration
1980 Toyota Land Cruiser BJ40 concours winner

If you have Adaptive Headlights there is sometimes a slight wobble, nothing too off putting for me. Although I hear they can get quite loose. 
07 Supercharged - Still breaking her in!

Boot soundproofing part 1 - http://www.fullfatrr.com/forum/topic15612.html
Custom exhaust - http://www.fullfatrr.com/forum/topic15296.html
18" wheels for Brembo equipped cars - http://www.fullfatrr.com/forum/topic15052.html

had this problem once at motorway speed (70+ mph) when I just bought it. Turn out the tyres were really underinflated(20 psi only) and all the tyres badly needed balancing. Inflated, balancing and alignment done. All ok afterwards.

Talk about dealer's PDI quality. Cant really blame the salesman as the maintenance dept performed the PDI though. 2006 4.2 Supercharged Java Black - loving it every moment behind the wheel even at 14 mpg!

Tx for the repllies. Two new headlamps wil do the job hopefully. 2017 Range Rover Vogue TDV8 silicon silver
2011 Defender 90 2.4 TDCI Nara Exclusive
2008 Porsche 911 997 4S Black/black
1970 Porsche 911T 2.2 in restauration
1980 Toyota Land Cruiser BJ40 concours winner