1st on a front tyre in a 3i, was a bit wierd as I didnt have clue what had happened as the car just went all over the road.

2nd was a rear on my merc sprinter, nailed it into a roundabout to head stright on and the rear outside tyre blew, came off the roundabout totally sideways doing about 60 mph and though the thing was gonna tip over. Shit myself at the time