Hi guys, I've noticed something rather worrying during my weekly commute this week, the car is horrendously unstable at 60-70 mph. This is on the M25/A21, good conditions and minimal wind. The car seems to slide from side to side by about (what feels like) 1 foot. I have had the tires changed to Continentals, had the balancing and weighting done and i was wondering if anyone else has come accross something similar to this? I have checked all fluids and fuses, having the brakes changed this week and checked tire pressures. I was wondering if when i had the car balanced if possibly the technician didnt re-tighten the nuts used to alter the camber possibly? Any and all replies will be so appreciated! I don't really want to drive her as it feels worst each time.