Are 16" tires still common? South america.. And disk brakes

Ok, so we’re neither talking about the truck nor the trailer in your signature. Got it.
Tires for the truck? The dodge? Sure, um, whatever fits.
You’re the only one who knows what rims you have what rims you intend to buy or what vehicle they’re going on.
Trailer tires ? 16s are the obvious choice and most are going to be different size than what you’re running on a HD truck unless it’s a dually (235-85-16 is the common denominator here), in which case the offsets will be so far off it’s not practical.
Not to mention hub size, lug size/type, etc make sure all that works for the ability to swap, as well.

So until you’re specific on what truck, what trailer and what tire size, to your original question, yes 16” LT and ST tires are still plentiful and common.

Brakes? You asked if it was worth the expense. IMO it is not, nor the added maintenance of a hydraulic trailer setup.
That said I would not turn one down, I would just not prefer it for less than fully loaded daily use, where the benefits may outweigh the maint and initial expense.

Grit dog wrote:
16s are a great choice IMO.
See you found the “right” trailer finally. Congrats.
But are disk brakes “worth it” on what?
Trailer presume? If you’re down for doing a e over h conversion, then I suppose. But ain’t nuthin wrong with drum brakes. Cheap simple, work well.

No, I never found my used narrow track trailer yet, and probably will have the trailer custom made, so why not disk brakes?

The tires.. I have a old chevy farm truck with numerous problems with almost new 16" Michelin tires I want to swap to my dodge diesel.. And also the fact I want to run eight identical tires all around and trailer rims don't come in 17".

Thanks!

And 17s are not a good choice in general unless you don’t have the need for more than just over 3000lbs load capacity.
Which might be sufficient for the OP.

I’m also presuming the OP isn’t talking about running his trailer rims on a dually.
Maybe in a pinch but not as a “plan.”

16s are a great choice IMO.
See you found the “right” trailer finally. Congrats.
But are disk brakes “worth it” on what?
Trailer presume? If you’re down for doing a e over h conversion, then I suppose. But ain’t nuthin wrong with drum brakes. Cheap simple, work well.

16's are very common. RVs and duallys still use 16's, and a lot of vehicles out there run 16's. I do not know about other countries.
Would it not be easier to change the trailer tires rather than the RV tires/wheels? Seems if you have 6 on van and 2 (or 4) on trailer that the trailer would have less to change.

If you are talking about a typical cutaway RV van chassis with disk up front and drum on the rear, then , no. The drums are fine, they have a lot of power as is. Keep in mind that big rigs use drums on the rear too, though they are air brakes with a lot more more to it.

Personally, if I were starting from scratch the 17 wheels might be attractive since I live over-sized tires anyway, but go to 19 and you have a lot more commercial tires available too.

Stick with the factory size tire and you will have no issues.

Disk brakes are the ONLY WAY TO GO.