Towing mirrors for Peugeot 807

Hi i'm a newbie to towing and caravanning. I bought towing mirrors for my Peugeot 807 but they were rubbish didn't fit right and kept slipping on the mirror so i took them back( they were cheapies so i wasn't expecting a lot) . Must admit while i had them i didn't try locking the car ( the mirrors turn in automatically) to see if they hit the window. So can anyone recomend a set of towing mirrors that will do the job please, many thanks Chris