Talked to the local ford dealership, they said that the contour mudd flaps work well with stock tires. I have aftermarket 285/70r17 tires and they said that the factory ones will not protect very well. Any thoughts or inputs on what kind I should use, thanks

 

Don't see why they wouldn't. I have the OEM flaps, 275 18".

 

This is why the guy said the stock mudd flaps would not protect properly.