Bill,
I agree that wet braking may be a problem but I can't see that that they would be much help in dry conditions as I can lock up the and skid the tires at any time . Not that I would want to as that would increase the stopping distance! Also I don't haul a big payload which could make a huge difference. Brakes are only as good as the tires coefficient of friction. if you can skid the tires bigger brakes won't make any difference. I'm more worried about being rear ended buy a teen on a cell phone than hitting someone.
Randy