four new tyres and car ' twitches' on a right hand bend?

Recently had 4 dunlop tyres on Peugeot 206d and on a slight bend (more on the right) the car just twitches slightly.You notice it and it becomes very worrying.The car has been back to kwik fit twice and as usual they say everythings ok.The car has had a recent mot.I only replaced the tyres because they were budget ones that were wearing quick.Any thoughts thanks