workinallthetime said:the thing i see most often that changes the amout a unit can tow is the weight of the unit. for instance the tow rating on a 3/4 ton is actually higher than that of a 1 ton in 99-2004, due to the added weight of duel rear wheels. gm has determined that a truck that weighs x amount can stop a load that ways y amount safely. long wheel base and duel rear wheels add stability buit not necessary better stopping distance.
the siminar i went to in 99 went into great detail about this and its been way to long since i was there, but the one thing they beat into our heads was that the ratings were based on what the truck could stop safely not pull.
my gm 2 cents
That doesnt hold water for me. It doesnt explain why manual transmission trucks almost always have a lower rating then an identical automatic or why an 07 Ranger with the automatic and 4.0 can tow as much as 5600 while an 07 F150 with the manual and 4.2 can tow as little as 2400. As far as I know, the F150 weighs more than the Ranger and has the same brake system as any other F150s.
Heres what I think, Marketing teams come up with the tow numbers, not engineers. Ford (and other companies) have a buyer in mind that they design and build their trucks for. They dont want a buyer that plans to tow 8000lbs buying the 6 cyl F150, they want that buyer to buy an F250 so they stick a tow rating on it to help the buyer in the right path. Heres why they dont want the wrong buyer in the truck. Joe comsumer buys his little 6cyl F150, he hooks up 8000lbs to it and tows it across the state. He gets back to find he has burn the clutch up, worn the brakes and the springs sag, he tells all his friends what a piece of crap Ford made, "12000 miles and Im replacing brakes and clutch, I'll never buy another Ford" Sound familiar?
If Joe wouldve bought the F250, he would be a happy camper and tell everyone what a great truck it is.
Its all about marketing and money. Find a list of tow ratings and try to make since of it. Its obvious that brakes, weight and wheelbase, suspension (all the things that make or break a tow vehicle) are of no concern. Tow rating is given to a vehicle based on how the manufacturer wants you to use it.
EDIT: Another point while Im thinking of it. Im into Jeeps. I have three of them, 2 Wranglers and a Cherokee. I can tell you that the brake systems of the Cherokee and the Wrangler are identical yet the Cherokee is rated to tow 5000 while the Wrangler is only 2000 and they weigh within a couple hundred pounds of each other.
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