Some basic rules apply here for anyone who is shopping (sounds like purchased that new camper, correct?) for a new hauler. You already know just the real weight of your new slide in. Retain all of your the truck has a cargo capacity at least equal certain number. Brakes, suspension, Ambulance engine and axles are all sized to work within this rating.
If you propose to tow a trailer take that weight work truck into consideration also. The trailer tongue (hitch) weight must not put the truck over it's rated axle capacities for front and rear also as combined. Your truck may have a Gross Combined Weight Rating, which may be the total weight of truck, all cargo and all towed do not.
At 55 mph your reaction time is 60 feet. Now add in 160 feet for braking distance. That's 220 12 inches. You just rear ended a 560 SEC Mercedes and doubled your insurance program.
