Can someone tell me why factory specs are less on the Limited than the others, specs show 145" WB with EcoBoost 7300# for Limited and 9600# for the others.

 

22" low profile wheels/tire combo is the most likely candidate.

 

I don't think very many trucks actually have the 9600 rating, most are in the 7300 or 7700 area. The specs you are looking at are probably showing the max potential rating for different trim levels. Reality is specific to each truck. And the Limited doesn't have any options, really. So, those are all the same. Whereas an XLT can be anything.

 

I believe the Limited uses softer springs than other equivalent trucks and has a relatively low payload due to the low GVWR and high weight from all the options. And then there is the 22" wheels as other mentioned.

 

Forget about the tow rating. Your payload rating is going to be the limiting factor. It is printed on a sticker on the driver's door jamb.

It varies a LOT depending on the individual truck. It could be 1100 lbs or 2000 lbs, but most Crew Cab 4X4's will be 1400-1800 lbs. A Limited will probably be closer to 1400, an XLT or XL closer to 1800. A 4X2 will have a little more payload and a regular cab and Super cab more than a SuperCrew. You don't say what you have.

All of those trucks have a GVWR of I think 7350 lbs. The heavier the truck is, the less payload you have. A Limited has many more options on it than a XL or XLT and will weigh more resulting in less payload.

When you factor in 13% of the trailer weight as tongue weight along the weight of the driver and a passenger and you'll probably run out of payload with a trailer weighing less than 7000 lbs.

 

a limited is closer to 1200