I have X5 2009 with Original Sports Pack with 20" Flared Guards and Side running boards. Had the car for about a week and road grim was thrown all over the side of the vehicle. I had rear mudflaps already as they are very standard in Australia. I purchased front ones and fitted myself, best purchase I ever made, still looks great with them on, less cleaning and less stone chips. There is a huge gap with 20" tires that simple stones etc hit the side of the car, even with side running boards. A very worth while a time saving expense. The quality of these mudflaps is fantastic and fit perfectly.