My wife drives both her 335ix and X3 (E84), she loves the preformance of the turbo, so her new X3 is a 3.5. I put Pirelli P Zero Nero Runflats on her 335 this winter for $160/each a very good tire (see consumer reports -- best all season tire) When compared to the tur***d stones from Bridgestone they are quiet wo wo.
