I have a 2007 H3 Luxury and from what I have read, the towing capacity is 4500 lbs. I have towed a utility trailer (1800 lbs) and a boat (2600 lbs) with no problems. My in-laws bought a travel trailer weighing around 4200 lbs.

Common sense tells me not to pull anything at or near towing capacity, however I work for an automotive parts manufacturer and I know they typically apply ratings that are lower than actual ability to be on the safe side. So..... Who has experience towing with an H3 out there?

Any body ever pull anything at or near capacity? Any issues stopping or going for that matter? Notice any unusual problems over time??

Thanks in advance.

 

I have an 08 Alpha it is rated at 6000 lbs. I pull a 30' toy-hauler with a full dressed harley
and combined it is 5800 lbs. Have had no trouble as of yet the trailer has E-brakes and I installed a 1200 pound capacity sway bar that was a must. I hope this helps.

 

It depends on how often you are going to be towing a load that size and how far you're going. I have a 23' boat that weighs 4000lbs dry and after gas (60gal tank) and gear, I'm pretty sure I'm close to being at my max towing capacity on my 07 lux (specially since I have 35" tires).

It's only a few miles from where I store my boat to the river, which is a blessing, because it struggles a bit and sometimes that boat wants to tell my truck where to go, but overall it's not terrible as long as you don't mind going slow.

As far as stopping and starting, there aren't really any issues. The I5 has plenty of low end to get you going (again, not fast) and the brakes on our trucks are ridiculously good, so stopping has never been a problem. The only time I've ever really had a doubt was going uphill on a steep incline in town where I had to floor it to keep the truck at 30mph.

After talking with the dealer and some of my buddies who know about towing, I've learned that as long as I don't plan on taking my boat to a lake a few hundred miles away and I don't try to tow it every day, the truck will be fine now and in the future.

 

H3DONIST put it into perspective very well.
4200 lbs for any extended period of time will wear heavily upon your 07 H3 with the 3.7L. If your destination is in the mountians or any type of incline get ready to use the hazards.

If you still feel like doing it PLEASE install a separate trans cooler to at least help your poor transmission out with cooling.