My wife's 2015 6 has about 55k miles on it, and while driving it for the first time in the while with the radio off, I'm hearing a groan coming from the left front that varies by speed. It sounds similar to a bad front wheel bearing that I've had in the past on a Volkswagen, but I'm not 100% sure. Before I start throwing parts at the problem, has anyone had a similar issue? I searched here and on Google, and I'm not finding anything to indicate that this is a chronic problem with these cars.