We've run Dunlop Z1 Starspec on both the ZHP and the 135. A great handling tire especially if you do Auto-X. That being said, they tramline like a MF on the ZHP but are fine on the 135. Personally I can't wait until they wear out.
We've also run the Hankook v12 on both cars. An excellent tire, quiet and good dry/wet adhesion although Kpro is starting to complain about the wet performance- but she's putting down over 400hp at the rear wheels.
We've had DSWs on our 4.8is X5 and on the MDX. As with any all season tire, there is a compromise... The relatively soft side wall as compared to the summer performance tire and we also experienced flat spotting when cold. Other than that, a great all season tire.
Kpro ran Bridgestone Blizzaks with the stock staggered wheels on the 135 and those tires are amazing for a full blown snow tire...
Both of our cars have staggered wheels...
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
H&R sport springs, UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers