Two different versions of the manual perhaps? Go with whatever is current.And I’m confused as to where the 120 lb figure comes from. The OP quotes the Y manual as stating that the vertical load of the Tesla hitch is 160 lbs.
See the 2021 Tesla Model Y Owner's Manual for information on the maximum unsupported tow hitch weight limit. The original documentation incorrectly stated that the Model Y tow hitch would support up to 160 lbs unsupported. Tesla has since restated this specification. The maximum unsupported tow hitch weight limit is 120 lbs. You will probably only be able to carry two bikes on the hitch rack.
Note: When carrying bicycles or other items on the Model X/Y hitch, always check to ensure that the maximum weight is not exceeded. The Model X/Y hitch is designed to support loading of up to 120 lbs.
Well if that is the correct value for the Y factory hitch that makes it impossible to carry two e bikes without changing the hitch. I recommend the Torklift Stealth Ecohitch which is rated for up to 210 lbs load 12” out from the hitch. That’s why I had it installed on my Model 3.I am the OP and I was not subtracting the weight of the rack to come up with a total 160lbs. I read a couple different threads this year where MY owners state the 120lb limit. This is one of them from Feb 21:
Tongue weight rating is not the same thing as vertical hitch load rating. The physics is very different.tongue weight is normally just 10% tow rating hence 350# / 3500#. I wouldnt worry much about it your bike rack would be perfectly fine. Also, 1UP does make sweet racks. Ive got a triple, love it !
This thread was started by someone concerned about the total weight of two electric bikes and the rack to carry them. As various posts have made clear, with heavy bikes like that it is possible to overload a hitch.I would not worry about a good hitch receiver being overloaded by a bike or 2, but I would want a good bike rack.
This puzzled me as well until I received my cargo carrier.From a load on the hitch hardware standpoint, why is vertical load different than tongue weight? What’s the physics behind that?
Ah, thanks for that. That makes sense if it isn’t actually a vertical load but a vertical load on a lever.This puzzled me as well until I received my cargo carrier.
A trailer has wheels (fulcrum) and the tongue (lever) is a pure downward force when standing still. The cargo/bike rack on the other hand turns the hitch receiver into the fulcrum and the rack produces torque a couple of feet away– which, if you think about it, exerts a different force on the receiver.