Wondering if anyone else has had this, when turning my steering wheel It occasionally goes "squeaky" carries on doing it for a period and then stops as suddenly as it started, "squeak" sounds like its coming from the column (inside the cabin), tempted just to take the cover off and spray with lube but wondered if it was a known issue it can be quite loud (loud enough to drown out the regular z4 squeaks and rattles) and very annoying.