I have a diesel now with 20" wheels. It has the sport suspension delete. I find the ride to be poor. Not as far as impacts but rather the up and down motion of the body even over fairly flat pavement with some undulations. The 19" standard all seasons are better in the same car, although the jounce condition still exits, it is somewhat minimized. It is very fatiguing on long drives. I had the car for only three months and one of the reasons I wanted a different car was to get AD + 19s. Judging by all the feedback I read here, it would fix that issue completely. I've searched all over to find a car with AD and at this point driven three cars with AD.
The first one was a 50i 2011 M-Sport with AD and 20s factory Bridgestones. I found the ride to be pretty stable but still firm, very responsive to steering inputs. There was just not enough rough pavement on the test drive to be sure of the comfort of this setup. Couldn't tell much difference between sport and normal setting.
The next car I drove was the same day at a different dealer over much rougher pavement. This was a 2010 3.0 with M-Sport and adaptive drive with staggered factory 19s and factory Continentals. This car rode really bad. The jounce was unbearable and the impact harshness was terrible. It also had a very floaty feeling that I absolutely hated. The sport mode felt noticeably better as far as float goes. I would run from this car into my diesel.
They also had a brand new 13 35i M-sport with 20s, Bridgestones. The M-Sport comes with Sport suspension in this car. Driving over the same bumps and potholes as with the 10 + AD, this car felt great. It quickly controlled jounce and impacts were soaked up much better. I was surprised by how well it rode with the 20s and Sport suspension. Car felt light on it's feet.
Unsatisfied with my experience as far as answering the questions I had with ordering my next car and the suspension/wheel options, I set out on another test drive with a different dealer the very next day. They told me they had a 13 50i M-sport. This is the one car I haven't driven yet. I was hoping it would be the Standard M-Sport with the Air self leveling suspension. Dealer was clueless as most are. I was pretty confident it would be since almost none are ordered with the AD for dealer inventory. Imagine my surprise when I noticed the Sport button under the shift lever. This car had AD, M-performance on top of M-sport and 19" Continentals. This is the exact combo I almost ordered, sight unseen based on all the talk about AD here. I was glad now they had it. Took a pretty extensive test drive in it. Over rough pavement and a few turns and open stretches. What can I say, I'm sure glad I drove this car. The floaty feeling I had in the 2010 the previous day was present, albeit to a much lesser degree. I didn't find the ride to be either comfortable or sporty. It handled rough pavement rather poorly with impact harshness pretty unsettling. The steering also felt numb. On the high note, the engine is glorious. You can really feel the extra power over a standard 50i. And that sound! :drive:
Having never driven the car, I ended up ordering the M-sport/M-perfromace standard air, self leveling setup with the 20s. Will report back in two weeks.
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