.... Also curious as to how these bikes perform on the dirt, how many miles on a set of tires, how much are tires, fuel mileage, fuel capacity, are they chain driven, any known problems, and any other thing you'd like to let me know? Thanks in advance.
On dirt. The DL 650 is better, the 1000 is bearable but probably not a good choice for someone who hasn't ridden dirt bikes. Dirt roads and it's far better than a sportsbike.
Tires - probably 12,000km or so. A lot depends on how hard you twist the throttle, tire type, pressure etc. Not spectacularly bad at least.
Fuel capacity is 22l, range on the 650 is ~ 440km, 1000 ~350. The 650 gets thirsty at speed though, the 1000 doesn't.
Chain drive, fit an oiler if it worries you. Chains & sprockets on the 650 last around 40,000km with care or an oiler, not sure about the 1000. Probably more worry free k's than a BMW shaft drive
and 1/10th of the cost to replace.
Problems - Clutch shudder on the 1000 (Now has a fix), no problems really on the 650. Probably the most reliable and hassle free of the current dual sports bikes - and by quite a margin.
Not the worlds best at anything, but capable of pretty much everything.
An ideal bike for people who like to ride and not have to spend a lot of time or $ at the dealer.