I researched both tires for months, and after running the AS4 on my Chevy SS Sedan (V-8, RWD, 415HP/415TQ) for 40,000 miles, I decided to get the DWS06+ this time around. Here are my impressions so far.
First, some context. I lived in Southern California for 3 decades, and never had to run anything other than summer tires on my vehicles. Once I moved to New Mexico, however (high desert, 5,200 ft), that had to change as soon as it got cold.
My first winter here, the first time it hit 15 degrees outside, I made a 90° right-hand turn from a road to a boulevard at low speed (I was at a red light that had just turned green). Suddenly, I was looking at the ass-end of my car out in front of me. This was with traction control and stabilitrak on. :-O Time for all-seasons.
When I first had the AS4s installed, they felt like the best tire I have ever had, on any car (I've been driving for 45 years), for any purpose. This includes summer-only tires. I was so blown away that I ran around telling everyone about them. I'm sure some of my friends thought I had lost it. But I was definitely a fan.
I appreciate tighter suspensions and stiffer handling over anything else. The AS4s had a stiff sidewall, fantastic turn-in, amazing grip, and low-noise (compared to the budget-friendly Falken FK510s I was running at the time). I was most definitely in love. There was nothing these tires would/could not do. For about 30,000 miles, that is.
After a while I noticed that the tires got "blockier" (i.e. harder), and I started losing confidence in them. This last year, I was just trying to get my money's worth out of them, but I stressed a little more each time I drove. In addition to getting harder, they started getting "greasy," doing the same thing the Falken's did, except all the time, not just in cold.
So, I got the DWS 06+ today. So far, interesting.
The Continentals are probably the quietest tire I've ever had on a car. Dips, bumps, etc. get absorbed like nothing. But, like anything else, there is a tradeoff... some of the handling is gone.
To get the handling I wanted out of the AS4s, I only had to put 36 psi in them. All other tires before them, I would have to put in 42-44 psi before I got the stiffness I wanted.
I left Discount Tire today with 35 psi today and it was wayyyy too soft. Stopped at Costco and put 39 psi in, which was a little better on the way home. After a day or two like that, I'll put 44 psi in and see what happens then. Next week I take a road trip, after which time I will come back and update my review.
So far, it's an interesting trade-off. If I can get the stiffness up a little bit while keeping most of this newly-found comfort, I'll be happy, and run them the distance.
Initial thoughts are: Love the comfort and noise level, but disappointed in the softness and turn-in. Maybe more air pressure will improve this... also, maybe it's something I can account for and adapt to. I'm hopeful. All I know is that I never want to feel the fear and instability of the last 10,000 miles I had on the AS4s, ever again.
More later.