I have 18 inch wheels, tend to drive in Comfort mode on the S/tronic, the ride can be a bit harsh on potholed roads but on a good surface it is comfortable and quiet, this is the first AUDI I have had with factory fit Michelin tyres, perhaps that has something to do with it.
I read the same in a couple of reviews. S-line has a lower/stiffer suspension (which you can deselect in the configurator btw). If you combine this with anything bigger than 17" it affects the comfort of the ride too much. This was my main reason not to select the Edition 1, but configure my own from scratch.
I changed my pressures to Comfort today and much prefer the softer ride. I thought from the moment that I picked my car up that the tyres felt way too firm but I didn't know that there was an option to choose whichever setting suited best.
There is not a comfort tyre pressure, it is the lower pressure to be set when car not heavily loaded!
This setting is so that the tyre wear is even across the full width of the tyre. If you use the lower pressures when the car is more heavily loaded then the outside of the tyres will wear more quickly than the center.
The ride quality of the car is usually harder when larger diameter wheels are used with lower profile tyres because the lower profile tyre has less resilience due to the narrower depth.
Well, whatever it's called, I like it. Went hill walking this morning to my usual spot (about 45 mins away) and the journey was mainly on A roads sitting around 60mph and I didn't notice any change in my mpg (low fifties). I'm sure that there must be some effect on mpg but it certainly appears to be fairly negligible, not that I'm particularly bothered. The car just feels nicer to drive.
I guess they must be specific to the size wheel as there are no tire pressures in the user manual, only on the sticker on the cars door.
I followed my own advise today and set my tire pressures to the comfort setting in the user manual. As most of the time I have a light load.(well apart from me)
Well it dose give a nicer ride so worth doing.
Regarding the firm suspension on my Q2,went in to an Audi dealer while on a weekend brake 200 miles from home and car had been making a lot of noise going over slight bumps,on inspection the mechanic found the front suspension travel blocks had not been removed before delivery,so if you are feeling the bumps a lot might be worth taking your car to be checked out.
Audi dealer offered me the first 2 services free, for forgetting to remove the transit blocks, accepted their offer, ride is much smoother now, if your suspension is very firm might be worth taking car into your dealer to have it checked out.