new TT what do you change first if anything?

Vent covers to have them open in rain or driving down the road.
Adjustable small curtain poles for refrigerator shelf retainers.
Adapter for power to run TT off of 15/20 amp recepticals, 50-30 adapter.
Extra potable water hose, extra sewer hose with a tapered fitting for the ground pipe, maybe a clear adapter section for monitoring sewage disposal. No fun being a little short on cables or hoses ;(
Some means of leveling the TT side to side using the tires, those mounted "jacks" are STABILIZERS and not for lifting (which can warp the frame). All kinds available from wood planks to platforms to "Lego" like blocks to roll on wedges. Get chocks that can work with your leveling system.
Are you getting a Weight Distributing Hitch? Setting that up right is a must when using. Not rocket science, manuals are clear, Utube videos usually available for all versions for setup.
Brake controller? A MUST.

tekman741 wrote:
Waiting for my 2020 forest river wildwood 179dbk to come in mid July.
The previous 2 TT where used so this is our 1st brand spanking new one. If you had to change something e.g. tires, stabilizers, battery, mattress (queen comes with an 8" thick coil mattress but bunks are foam), seat cushions, faucets, locks... what would you do or have the dealer change.

Personally, I like doing my own work because in my experience dealers do the bare minimum with cheap labor.

This sounds very much like some motorcycle forums. People often ask the same sort of questions. Should I buy risers, should I change the seat, should I buy this or that?

My answer to your question is the same as that I offer to a new motorcyclist.

Spend some time in the camper in the first season and then decide what changes YOU want to make based on your needs. You may find that that mattress that came with the camper is fine for you and you don't need that 4-6" mattress topper. Or you may decide that whatever chrome go faster is not for you. Basically customize it to your way of camping. For some that means tricking it out to the max. For others it means a few creature comfort changes. But don't jump in with a bunch of changes that you read here simply because others have used them. Make sure that they will work for you and how you use your trailer.

We've just spent our first year in our trailer and have found a few things we would do. One which was done the first week was the mattress topper. Other things we'd like to do include removing the jackknife sofa and replace it with two recliners. I'm researching that now but in the meantime we have found some folding foot stools that work.

Put some Maxxair covers on your roof vents.

Live with it first.
Only you will know what works for you.
After our first Snowbird winter we tossed the mattress and couch. Next I squeezed everything I could for extra storage, shelves, hooks etc...

Live with what you have for one season at least.

P.S.
Original tires lasted five years.

every single suggestion is awesome.

garysol wrote:
If I have the spare money the first thing I do is swap out the tires to a better quality set. You can still sell the take off tires as long as they are new to recoup some of the money spent.

This! Manufacturers go with the lowest bid on tires and then get your money again when you have a blow out and there’s fender damage. Higher rated load range tires will give you peace of mind.

tires ,they put the cheapest they can get on new trailers, and I,d pop a bearing cover check the grease packing. check roof for a good seal. at the clauking .

Mattress - either a new one or a nice, thick memory foam topper.

Second is adding shelves to the closets, assuming yours has one of the "hanging" closets designed to hang clothes in... we found adding shelves and putting folded clothes in was better for us.

If I have the spare money the first thing I do is swap out the tires to a better quality set. You can still sell the take off tires as long as they are new to recoup some of the money spent.