I thought that implied that the Clio had simlar problems at simlar speeds - as I think Neil did.
BTW that response was uncalled for IMO!
As others have said mixed tyres are not good on a Zed - RT says check your tyre pressures (good idea) - the car kills power when it kicks in but I don't think it actually breaks.
I assume there are no leaves, oil or any other things on this paticulat corener that could be causing it?
Could you perhaps expalin a little better what happened - if you were following a landrover at 60mph and he made the bend surely even if traction control kicked in it can't have been that mad? or are we all missing the point?