Tires OEM BMW or Maxxis

Maxxis or Michelin Wild Enduros. I use 2.4 Enduros coming from 2.3 high rollers. The Enduros just stick man, sideways.

maxxis ardent in 26" are decent if you find it in 3C it's a nice tire for trail enduro.

I'm also currently running a MAXXIS Desert IT front tire on my KTM 1090 tubeless wheel without issue. Its a hard compound tire that is designed for the tough stuff, and I also recommend it.

HD thrust arms are an improvement without too much sacrifice. Better shocks as well. I’ve found tires make a huge difference with the E39.

The best blend of traction and longevity I've ridden so far is Maxxis Minions in the 60 compound. They held up to multiple days in Whistler Bike Park and were still in fine shape.

Narrow, low-profile tires aren't as forgiving over potholes, especially when riding on the 20" wheels.

I just put on my 285 75 16 maxxis at811s a few days ago. Road noise is almost none, you would have to turn the speakers off and listen for it. Load rating E so stiffness is definitely a given. Braking is definitely harder because of the weight.

Gotta say, I've been a big fan of my maxxis tires. Super solid tire for a brand that isn't exactly a household name (I wouldn't call them offbrand, just not a big name).

Aggressor has all the traction of a Dhr while rolling a touch faster. It's pretty shit in the wet though.

If you've got the OE supplied tires on ANY trailer, I'd make a VERY strong recommendation to swap them out for a reputable brand as soon as possible.