just found this thread- any updates to report? I think the E53s look mean with some beefier all terrain tires on the stock 17"... I wouldn't do any technical trailing with one, but with a slight lift and A/T tires, I'd def take it to a favorite MTB trailhead or bouldering spot.. This isn't mine, but I'm all about this build...

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'10 E83 Msport 6spd *slicktop*