I think part of the debate here is that there are several important variables involved, each of which can easily be a major determining factor in how well a rwd car gets through the snow, or how well we _think_ it does or doesn't. Limited-slip differential: makes a big difference, and huge difference if one's car has no electronic traction controls. Traction controls (dsc, asc, etc. etc.): IF a car has them, it can be said that, generally, they _may_ be of some help. They also may be detrimental, depending on circumstances and conditions. Junk-in-the-trunk, as it were; As Steven mentions, it's an age-old tip to put some extra weight over the rear axle. I have some lead weights my mechanic made up years ago for just that purpose. Each block weighs 30 lbs, and six in the trunk right over the rear wheels is 180 lbs, optimally placed. However, not every driver will opt to throw sand bags, cat litter, or what have you, in the back, for hopefully some improved traction. Tires: snow vs. non-snow, and variables within snow tires; snow tires, as all other tires, are not created equal. Stick a wide, low profile snow tire on a car and compare a narrower, higher-profile snow tire of the same design and compound on the same car, and invariably, the narrower tire will afford better forward traction. However, all drivers won't necessarily make the optimal snow-tire choice, if they opt for them at all. Also, age - a brand new snow tire will have better grip than a worn 5-year old snow tire which has suffered both age and heat cycles. Individual standards - there isn't a standard definition for what's "good in the snow". Me, I'm happy to be skidding, slipping and sliding, as long as it's all controllable/catchable, I'm not getting stuck, and I'm still moving and making headway, even if it is slow. Others might consider that to be their worst snow performance ever, particularly if they're not comfortable or experienced with reacting to, catching, and controlling skids. Many might well expect the same step-on-the-gas-and-go-with-no-muss-and-no-fuss that they get in totally dry conditions. Weather - hardly like one is going to get the exact same temps or conditions each time there's a snow event. Broad range of conditions may occur, obviously, across the weather spectrum. I would feel sorry too for anyone who finds themselves disappointed with their new vehicle's capabilities, particularly if their expectations were far higher than what they end up experiencing. I think we can safely speculate the OP was expecting it to do better than it has, but we don't know exactly what the OP _was_ expecting. Considering the OP is jrjmpls, I'm gonna guess that's short for JRJ, Minneapolis - &, if anyone's following the weather up there right now, it's a disaster. I heard on the news they had 800+ accidents in one day, and they've had big snow, topped by freezing rain, with a light snowfall over what's become largely glare ice - treacherous at best. So, I wouldn't be surprised that someone might find their new BMW, or any car, completely lacking in those kinds of conditions, even with every traction aid available, a lsd, and brand-spanking-new high-profile, narrow-width Blizzaks (which have a certain amount of tread-depth optimized for ice performance). Any vehicle will need some traction in order to move. Newtonian physicists, speak up, here's your chance! And if mpls is something like Mary, Paul, Larry & Susan instead, I guess we'll just have to keep guessing!