Big Blue
Well-Known Member
Typical legal mumbo jumbo. Not sure what the legal definition of TVTW is. Cannot be tow rating or you couldn't tow greater than the GVWR of the truck. Assume it is Tow Vehicle Towing Weigh and is used in some other calculations.Straight from the SAE Doc.
3.2.1 Tow-vehicles Under 8500 lb GVWR
TVTW is the weight of the tow-vehicle used for EPA emissions and fuel economy certification including all options inx Ecess of 33% sales penetration plus one 68.0 kg (150 lb) driver and one 68.0 kg (150 lb) front seat passenger, plus thet Tow-vehicle manufacturer’s available trailering package and/or any required trailering content (if not included in the 33% option penetration weight) plus representative aftermarket trailering equipment as specified in 5.2. In the case where a trailering package is not available from the tow-vehicle manufacturer or it does not include a trailer hitch component, the representative aftermarket trailering equipment as specified in 5.2 shall include a trailer hitch component.
3.2.2 Tow-vehicles at 8500 lb or Greater GVWR
TVTW is base vehicle curb weight plus one 68.0 kg (150 lb) driver and one 68.0 kg (150 lb) front seat passenger plus 45.4 kg (100 lb) of optional equipment split evenly between front and rear axles plus the tow-vehicle manufacturer’s available trailering package and/or any required trailering content and representative aftermarket trailering equipment as specified in 5.2. In the case where a trailering package is not available from the tow-vehicle manufacturer or it does not include a trailer hitch component, the representative aftermarket trailering equipment as specified in 5.2 shall include a trailer hitch component.
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