Trailer Sway

Your truck probably has "P" rated tires which are designed for passenger cars. They have less stiff sidewalls among other things and are engineered more for ride comfort. Move up to "LT" rated tires which are designed for light trucks.

Is it actual sway (as in, you can see the trailer's back end going back & forth) or is it "wind wag", where the trailer itself seems to be slightly rocking back & forth? Wind wag is pretty common and something you usually can get used to. Could be your hitch needs some adjusting. If it's sway, then yes, the sway bar should be doing a better job.

We tow with an Equal-i-zer, which has two rigid sway bars which use friction against brackets on the tongue, rather than being attached by chains. Have not had a problem with sway, even when towing our previous 34' TT (and in pretty windy conditions; if sustained winds are over 35 mph we usually try not to travel.

Everything kknowlton stated. ;)

No not normal, but it is more pronounced when a half ton truck is utilized to pull such a large rig. The thing with sway is it can go from moderate sway to out of control sway in a matter of seconds and by the time you realize what is happening it's too late.

We are neighboring states and we know a bit about how the wind blows in our neck of the woods, I wouldn't chance towing at highway speeds if even I had just a little sway. Too worried about the sudden wind gusts we get crossing through all the canyons out here.

One option is to try WD hitches from Propride or Hensley that can provide some relief by deterring sway before it gets too out of hand. We also utilize a Reese WD/SC hitch and experience no sway towing our 32' 9500# TT at interstate speeds with our Chevy 3/4 ton HD gasser.

30' TT on a 1/2ton class pickup seems like a recipe for problems. If it's not overloaded (air bags to NOT increase payload), I would suspect it's very close.

May be possible to dial in the WD hitch better, maybe you have P rated tires upgrade to LT may help.

Thanks for all the quick replies. I'm running LT 285/55 20's, so I don't think the tires are the problem. I did quite a bit of homework on towing capabilities and agree that airbags do not increase towing capacity (or tongue weight capacity), but they do help a lot with stability. And, yes, pulling a 7,400 lb (dry weight) rig with a 1/2 ton is cutting it close. Regardless, according all of the data I could get my hands on, I'm within the Tundra's capabilities, so long as I don't carry a lot of weight in the truck itself. If I understand things correctly, cargo capacity subtracts from towing capacity by the square of the cargo's mass. I had Camping World install the hitch, so I may ask them to adjust it and see if I can get better performance.

I was told this was an awesome forum, and for my first post, you guys proved them right. Thank you again. Looking forward to learning more.

2 things.
1) Tires? LT or P??? P being Marshmallows for towing.
2) Are your cams on the hitch centered in the pocket? Any adjustments you make, you should recheck to make sure your cams are centered when straight.

We had the same problem with our F150 and 32' toyhauler. It was really uncomfortable to drive even with LT tires, airbags, WD hitch, Equalizer, etc etc. Our resolution was to get a bigger truck, and the issue went away.

Not enough truck. 7400lbs dry is probably 8400lbs. Couple that with 31' and the TT weighs more than the truck and is overpowering it. When I towed a 31' 7300lb loaded TT with a 2010 F150 Max Tow I had the same situation. Lots of wandering but never white knuckle type. I added LT tires, SuperSprings and used a good EQ with 4pt sway. Had the front of the truck dialed in perfectly. But just the weight and length of the TT would move the truck a little. Always had to be glued to the wheel.
Moved to a 3/4 ton truck and all the glued to the wheel sensation was gone. Sure the TT still waggled around but the truck stayed solid. Side winds never fazed it.
Next move was to a 5th wheel. That's when towing got really relaxed.

Haven't heard actual tongue weight mentioned yet. . .