If you're pulling 7x14 or any trailer larger than that with full of stuff in it, this grade braking is the BEST thing you can have! Awesome feature, helps to decelerate all the weight without overheating the brake pads and changing that nice chrome color wheels. Also works best with boat and RV's and it is must have. But if you're just hauling your own weight
, then disabling it will not harm.
