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After some additional research it was eventually my opinion, and my opinion just, that when Ford got wind with the 2007 Toyota Tundra’s offering of a 5. 7 Liter V-8 with 381 horsepower and 401 lb-ft of torque, they felt threatened a bit. Early on, this year, Toyota stated this half-ton truck would have tow ratings of 10, 000+ lbs. An Edmunds. com 2007 Toyota Tundra review stated that the properly equipped 4X2 regular cab Tundra can tow as many as 10, 800 pounds. This would are generally the highest tow ratings in its class for 2007. According to Autodata, Ford saw its F-Series sales slip 14 percent in the first quarter of 2007. Was that Ford claim of 11, 000 pounds a direct result not being outdone? Not losing sales to its competition? After all, Ford trucks have been the king of the hill for quite some time.
I found it exciting that in 2004, 2005 and 2006 the greatest tow rating for an F-150 was 9, 900 pounds. In August of 2006 Ford announced the 2007 F-150 was competent at towing 10, 500, and in January 2007 it’s increased to 11, 000 pounds. The only difference between these trucks, to make a case for this increase, is a fully encased frame??
Vehicles go through rigorous testing to determine tow ratings. There are many elements involved like engine size, transmission, wheelbase, axle ratio, brakes, cooling systems, tow packages plus more. The problem that I see using tow ratings is that even though there are plenty of factors involved and there is thorough testing involved, there is no set standard to measure these things against, at least not that I’m aware of.
Let’s take a look at some actual specifications between the Ford F-150 along with the Toyota Tundra and then we’ll accomplish the math. The Ford F-150 in question has a 5. 4L V-8 algorithm with 300 horsepower @ 5, 000 RPM together with 365 lb-ft @ 3, 750 RPM. The Toyota Tundra contains a 5. 7 L V-8 engine using 381 horsepower @ 5, 600 RPM and 401 lb-ft @ 3, 600 RPM. Both have a 4. 10: 1 rear axle percentage. Ford advertises a tow rating with 11, 000 pounds and Toyota promotes a tow rating of 10, 800. The F-150 has a Gross Combined Weight Rating (GCWR) involving 15, 800 pounds and the Tundra contains a GCWR of 16, 000 pounds. It’s interesting that the Toyota has the higher horsepower, torque together with GCWR, but a lower tow score!
Let’s look at an easy formula used to determine vehicle pull ratings. The GCWR is the maximum permissible weight of the fully loaded vehicle and the truly loaded trailer combined. So if we take the GCWR minus the vehicle curb weight (the actual weight in the truck, less passengers and cargo) we realize how much weight the truck might tow. bicyclemark’s communique, www.bicyclemark.org
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