THE REAR BRAKES DON'T PROVIDE ANY STOPPING ASSISTANCE,THE FRONT BRAKES LOCK UP ON GRAVEL AND THE REAR WHEELS NEVER SLIDE OR PROVIDE ANY STOPPING POWER. WHEN YOU BACK UP ON GRAVEL OR ANY SLICK SURFACE THE FRONT WHEELS ALWAYS SLIDE EVEN ON LEVEL GROUND. WHEN BACKING DOWN A HILL ON GRAVEL OR A SLICK SURFACE THE JEEP WONT STOP UNLESS I USE THE HAND BRAKE ALONG WITH THE BRAKES. I HAVE TESTED THIS ON SEVERAL OCCASIONS AND IT IS THE SAME EACH TIME. THE DEALER JUST SAYS THEY ARE ADJUSTED TO FACTORY SPECIFICATIONS. THE REAR BRAKES PROVIDE LITTLE OR NO STOPPING POWER!