I keep 20 pounds in the rear.. with a passenger you need it, otherwise it gives you an added 1" of clearance w/o making the ride harder.. In the front, I had my EZ Pass mounted high up on the brake line bracket and I dimpled my fender hitting a pothole.. I had no idea the front wheel had so much travel.. more air (like 5 pounds) was noticably stiff up front, so I relocated the EZ Pass..