Tires Uniroyal or Maxxis

DHR II 2.4WT exists in double down and EXO casing at least in 27.5 -- I own both.

I have liked maxxis crossmark.

On my XC hardtail I have a Maxxis 2.4 Ardent on the front, and a Maxxis 2.2 Ikon on the rear. It is a great combo so far.

I just put some 2.25" Maxxis Ardent TR EXOs on my Trek 29er and they have been awesome so far. Tons of grip compared to the bontragers I had (cheaper ones that came with my bike).

Maxxis all the way. Seem to be the best combo of grip, price, durability, and weight.

Your trails sound pretty similar to what I ride. I have a set of Ardent 2.25s that I really like.

I love my aggressor on the rear, rolls and grips well.

I also have a minion DHF for downhill and "rowdy" trail or wet/sandy conditions. It rolls a lot better than I expected for such tall knobs

I have these exact tires on my charger except mine are 18in. The tires are coming up on 4 years old with about 30000 miles on them and they are completely fine in everyday driving. If you don't really care about performance then they're fine. They're obviously not a performance tire but for being relatively cheap they are more than adequate in all temperatures and if you drive normally they're fine in the rain. The only time they're kindof sketchy is in snow but as long as you give yourself more time to react and you don't live somewhere super hilly they're fine, especially if your a4 is awd.

When I had my e46 it was wearing a set of Uniroyal Tiger Paws. In the course of the next 30k miles (almost exclusively highway miles), they all warped one by one and had to be replaced. I don't remember exactly how old the tires were but the last one was around 4 years old when it went, and each tire still had a decent amount of tread left in every case. I will never buy Uniroyal tires as long as I live.