85genius said:In fact, after some good points made by Angie4m and sars I would possibly do this a slightly different way.
Its not a choice of weather to accept the goodwill gesture or sue them as you can in fact do both!
Take them up on the offer and make it well known to them you are doing it grudgingly and do not at any point waive your right to pursue a claim, if you dont make out that you are considering it then they will be very unlikely to ask you to.
Tell them that you want to keep the old panels to inspect if you are having to pay for the repair.
Get the repair done, pay your £700 collect the old panels and then get them examined by a paint expert. If they say it is related to the finishing of the panels and specifically not your misuse then you can go back to BMW to try and get a refund of your £700+ costs getting the panels checked... If they refuse at this point its then time to sue
Good course of action to take, means you can get the repair done and argue the toss later..
Mike