Originally Posted by PaulsTrail

I avoid following others closely and give trucks a wide berth, and I don't commute in the 4Runner (keeping it out of the bumper-to-bumper city traffic), so after 36,000 miles I have very few rock chips in the front.

But, I have tons of chips all over the flared-out portion of the back doors, the leading edge of the rear wheel moldings, and the lower portion of the front doors. Some chips go right through the factory protective film in those areas. My 4Runner is stock, other than BFG K02 tires which may tend to pick up and fling more gravel and road debris. I do a fair amount off-roading and driving on dirt and gravel roads, but the vast majority of my miles are on pavement. Not sure how to prevent this (other than running boards, which I don't want).