I didn't have to wait long to get a good test of the Cadillac CTS' snow-driving prowess. Detroit got a good dusting last night and we were out early enough to drive the Caddy on lightly traveled roads. I got to Woodward Avenue just in time for the transition from pure pretty powder to snotty gray slush.
Our rear-drive CTS wears Michelin Pilot HX MXM4 tires, which Tire Rack classifies as Grand Touring All Season rubber. Slush counts as a full season in the upper Midwest and I'm not sure that's covered in "All." We concur with Tire Rack's assessment that this model Michelin exhibits "Fair" performance on snow and ice. That ranking makes the HX MXM4 the worst-performing in the snow of the Michelin models in its catagory.
Spoiled by dedicated snow tires on my personal car, I find the all-season Michelins only borderline acceptable, at least in the brief time I've spent with them on slippery stuff. Even with a very light throttle foot, I'm getting a whole lot of traction control interventions (stability control intervention comes with a heavy foot), making forward progress, um, deliberate. On the upside, the CTS' traction control system comes on smooth.
More study is needed though. Now if you'll excuse me, I need to go find a large, empty, snow-covered parking lot to practice my donuts and drifting winter-driving techniques.
Daniel Pund, Senior Editor, Detroit

dougtheeng says:
12:52 PM, 12/17/08
I'd love to see more posts about the LT cars in snow. Its a shame Edmunds is based in Southern California.
hoops26 says:
01:07 PM, 12/17/08
Agree.
It's disturbing lately how many posts talk about rain like it is some strange phenomenom.
chavis10 says:
01:08 PM, 12/17/08
I noticed the traction control on my Mazda is pretty aggressive and noisey. It tends to grabs the brakes pretty hard which is jarring. I've been driving the folks' Impala LTZ this week and we had snow yesterday- traction control is much more refined in subtle in application. GM's systems seem to upshift the transmission and retard spark before they grip the brakes.
arm51 says:
01:20 PM, 12/17/08
Yes, I believe a tour of duty in the Midwest is required. Hey Edmunds, I'd gladly take the R8 for a winter driving test here in Chicago!
I agree with Dan too: large, empty, snow covered parking lots are the best!
mercedesfan says:
01:35 PM, 12/17/08
I think it should be noted that nowhere in this post does Dan mention the CTS having adverse affects from the cold temperatures like a certain Nissan. Of course, the GT-R was in a far colder climate. I mean low 40's, where does it ever get THAT cold? :)
carfreak8394 says:
01:37 PM, 12/17/08
Nice pictures.
stovt001 says:
02:27 PM, 12/17/08
Finally, a post not complaining about the millimeter of rain and temps in the 40s we're getting here in Southern California.
kurtamaxxxguy says:
02:35 PM, 12/17/08
Good info, thanks. Glad I passed on Michelin.
Try Nokian WRG2's if you want all seasons that actually work in winter - made my Forester go places other cars feared. WRG2 may not be up to your summer handling requirements, though.
estreka says:
02:45 PM, 12/17/08
Slightly off topic (sorry!), it reached -25 here over the weekend with a wind chill of -65. It was so cold that the oil in my car had turned to taffy and when I called for a tow truck, they said they were out of commission because the pneumatic lines had frozen over.
More on topic, nothing beats a good set of snow tires.
jm1212 says:
03:37 PM, 12/17/08
the funny thing is arm51, the R8 fares pretty well in snow despite being a supercoupe. Quattro is great in the snow, almost as good as Subaru's AWD system.
subytrojan says:
04:50 PM, 12/17/08
Dorifto!!!
subytrojan says:
05:04 PM, 12/17/08
It's hard to say which AWD system is "better" without putting them to the test (calling actualsize! j/k).
Here's some cool info about diff AWD systems. From it, one can get a general idea of the "good" vs. the "weak sauce" ones.
http://www.geocities.com/gkurka2001/CarTech/tech_traction_4wd_2.htm
For those with 20 minutes or so to kill, here are some good videos of Subaru's symmetrical AWD vs. others' attempts at AWD. Sadly, Audi is not included in the comparison.
http://www.youtube.com/watch?v=Q7dVFY5CxT0
http://www.youtube.com/watch?v=t09ExAUgtyE
kurtamaxxxguy says:
07:41 PM, 12/17/08
Wish there were some newer subie comparisons.
I would expect R8 to do well if it had winter tires.
g8gtnorth says:
08:26 PM, 12/17/08
All season? No season. I went with the Michelin Pilot Alpin3's (18's) on my G8, and they're confidence inspiring to say the least. Seriously good winter tires.
I dunno if the TC on the CTS is anything like mines' Dan but I found that when it came to driving on side streets with a couple of inches of snow it actually hampers progress. That being said, I hit a patch of ice mid turn at about 25-30km/h, turning onto a side street slight throttle, and TC smoothly sorted everything out before I rotated into someone's driveway, so no complaints there. No cars parked there, but still would have been unpleasant. Didn't even have time to react, just to watch it do it's job. Like you said, aggressive but smooth. What can I say snow tires or no, ice is ice.
uncanny_man says:
10:19 PM, 12/17/08
Yay, a review about a car in real winter driving and it's from Edmunds! Thank you! Could you drive some more cars to Michigan? For science?
the_big_al says:
11:00 PM, 12/17/08
large empty snow covered parking lots are the best until you hit the side of them and knock the front wheel out of alignment... but I would't know anything about that???/ :X
chavis10 says:
06:16 AM, 12/18/08
Snow tires with 2WD is just as affective as AWD with performance tires. Tests have been done and the advantage of AWD is much exaggerated. Besides, most winter weather accidents happen when trying to stop where AWD does absolutely nothing.
bepperb says:
06:57 AM, 12/18/08
Snow tires with 2WD is just as affective as AWD with performance tires. Tests have been done and the advantage of AWD is much exaggerated. Besides, most winter weather accidents happen when trying to stop where AWD does absolutely nothing.
That's pretty similar to my experience. Plenty of people around here (WI) have awd cars with worn out tires, or Subarus with 45 or 50 series summer tires, and it nets them no advantage but all the disadvantages of 4wd, and probably some overconfidence to boot.
arm51 says:
07:19 AM, 12/18/08
Actually, I'd really just like to drive the R8! :)
pantherblack says:
07:22 AM, 12/18/08
I concur with g8gt north, in winter climate's all-season just does not cut it. On my g8 gt 09 I have Nokian Hakkapeliitta R's which are amazing on snow and ice. Also GM's traction control systems are great, not nearly as intrusive as other's I've come accross. I have not found the TC on side streets have hampered my progress, but I'll do some more testing, mostly in deserted parking lots:).
pantherblack says:
07:23 AM, 12/18/08
I concur with g8gt north, in a winter climate all-season just does not cut it. On my g8 gt 09 I have Nokian Hakkapeliitta R's which are amazing on snow and ice. Also GM's traction control systems are great, not nearly as intrusive as other's I've come accross. I have not found the TC on side streets have hampered my progress, but I'll do some more testing, mostly in deserted parking lots:).
stingray454 says:
08:01 AM, 12/18/08
After buying snow tires for my '03 G35 Coupe (Bridgestone Blizzaks), I wouldn't drive a RWD car in a snowy area without snow tires again. The difference is dramatic, and worth every penny.
All season tires don't cut it unless you have AWD.
farvy says:
08:59 AM, 12/18/08
Yes - this Michigan native also love the posts about non-Southern California weather. But having visited California often & lived in San Diego for 1.5 years, there are times I miss the golden weather. Like right now.
Dan is going to have more fun tomorrow because we're going to get dumped on again here in Detroit with 6-10" more snow starting tonight.
My 2009 Mercedes C300 4-matic with all season tires works just fine. Traction Control & Stability Control work smoothly, although I drive carefully enough to not invoke them too much in bad weather.
greenpony says:
10:15 AM, 12/18/08
Thank you for bringing another car to a part of the country with more than one season.
actualsize says:
10:36 AM, 12/19/08
Basketball nets in the driveway are one thing, but if your neighbor's kid has a hockey net ready to go (pic #2,) you know it's cold.
Keep warm, Dan.