Every truck / jeep / suv I've ever owned has said the same in the manual, some for 1000 miles. It's supposed to be for bedding in the brake pads, piston rings and bearings, valve seats, and various other things. Most brake manufacturers recommend you avoid hard stops for at least the first 500 miles.Just wondering what you guys thoughts were on the break in period for towing. Just bought a brand new truck to tow my boat, now come to find out I can't tow it till after 500 miles. ?