Forum Discussion

LSVLance's avatar
LSVLance
Explorer
Dec 07, 2014

8,000# hitch on new E-450 Chassis

It has recently come to my attention that all new Thor Motorhomes on the E-450 chassis built after 10/01/2014 come equipped standard with an 8,000 pound receiver hitch instead of the 5,000 pound hitch previously used.

Has anyone visually looked at a chassis with this new hitch on it to see if there are any other changes made to the chassis besides just bolting the new larger hitch on? And what is a 8,000# hitch anyway? I've always thought that a Class II is a 5,000# total\500# tongue hitch and a Class III is a 10,000# total\1,000# tongue weight hitch.

A little background on us, we have recently started looking for our first RV to use on long weekends, few driving vacations a year and as a tow vehicle\portable home to use to take my car to a race track a few times a year. Being able to tow an open trailer with a 3500 pound car on it is important (total weight around 5500-6000#) as well as being able to easily dry camp for 2-3 days at a time. We've gone all across the board, started looking at small class As, considered the F-550 Super Cs for a bit, leaned toward the B+s and now since this latest hitch revelation has surfaced are now looking at Class Cs again as well as small Class As.

It's just the two of us, no kids, 2 small dogs, brand new RVers, walk around bed is important, opposing dinette and couch floor plan preferable, driver and passenger seat swivels help increase living space, being rated to tow 6,000-7,000 pounds comfortably is important, fitting under an 11"11" door to my building would also be a plus.

We have found many RVs that fit all of the above requirements but have that 5,000# hitch on the E-450 Chassis even though the GCVW has room to tow 7,500 pounds. Being able to adapt an 8,000# hitch on any of the other E-450 chassis would really open up our possibilities. Or if more of the other manufacturers also start putting the 8,000# hitches on their E-450 chassis soon that would also work (ie Coachmen Concord).

Interested in any and all comments that may help steer us down the proper path here. I'm not looking to step way over any lines here but at the same time am not afraid to modify things just a bit to fit my needs if applicable.
  • Golden_HVAC wrote:
    The E-450 has had a 22,000 GCVWR since the time that I bought my class A back in 1997.

    I believe in 1997 the numbers were 14,050# GVWR and 20,000# GCWR.
  • The E-450 has had a 22,000 GCVWR since the time that I bought my class A back in 1997. The 14,500 GVWR - this leaves about 8,000 pounds towing ability if the RV is 14,000 pounds, and the trailer is 8,000 pounds.

    Hitch weight is around 800 - 1,000 pounds on a cargo trailer of that size, so curb weight would need to be around 13,500 pounds in order to tow a 8,000 pound cargo trailer with a 1,000 pound hitch weight.

    What you would need to worry about is the extra weight put onto the rear axle. Say the rear axle to hitch ball is 10 feet, and wheelbase length is 176". Then every 100 pounds on the hitch will take away about 60 pounds from the front axle, placing 140 pounds on the rear axle. 1,000 pounds would be 1,600 put on the rear axle and 600 less on the front axle.

    A much shorter distance between hitch and rear axle, say only 6 feet, you would have 72" between hitch and rear axle, and 176" between rear and front axle, or about a 2.5:1 ratio. So 250 pounds on the hitch will only take away about 100 pounds from the front axle, or 1000 pounds would take 400 pounds off the front axle onto the rear one.

    Good luck!

    Fred.
  • Those Ford specs of 14,500# and 22,000# have been in effect since sometime in the 2011 model year. It's only fairly recently that MH builders began rating them to the full GCWR.
  • Yeah, that was a mistake on my part, everything I'm looking at is on the E-450 chassis. I'll edit OP.
  • I'm not sure about your info on the E350. It looks like the 2015 E350 has a max GVWR of 12,500# and a max GCWR of 18,500# which would give a 6,000# tow rating at best.
    2015 E series Specs
    The E450 could be good for 7,500#.

    Looking at the specs again, a 138"WB with an 11,500# GVWR and the same 18,500# GCWR gives a possible 7,000# tow rating.



    w
  • Thanks for the heads up. Man, I sure wish FOrest River's website was a bit more user friendly as far as specs go. Still looking around though.