That seems to be about right on the tires, but I can get a max of about 8k out of the rear and a little more out of the front maybe as much as 12k. I'm running Metzlers, and they seem to have a good balance of grip and wear.
I've also had the ECU replaced and I believe there was a recall on the QC's that was already performed. The clutch slave was out of warranty, but that was the only unusual item I have had. Normal BMW suggested service items, brakes and tires. The valves were adjusted for the first time this year as they finally went out of tolerance.
Almost time for a new wind screen and the paint on the panniers is getting a little banged up from road debris.
Big trip for me was last year from New Hampshire to Florida. Most of the rest of the mileage has been by-ways and highways of New England.
The bike has PIAA 1100's, bar-backs, lowered pegs, Cruise Control, Stealth backrest and a Zumo GPS... Besides all of the standard niceties....
I find that I can do about 750 miles a day on this bike without too much effort which makes the interstate miles fly by pretty quick, just wish it had a bigger fuel tank!