Ride quality trade off between 18's, 19's and 20's

[anzer]

Hi all

Soon to have 2010 35d - but have an option around wheel size/style

I've had standard 18's on my current 35d - the ride is good, but they just look a bit smallish with gaps in between tires and bodywork.

I LUV the look of the 20's - esp given you gets a wider wheel arch addition - just gives the X5 a meaner stance etc - do anthetically they look fantastic

I'm just worried about ride quality on 20's - admitadely I wont have sport suspension which I suspect can make ride even firmer again - so that may help.

The trade off would be 19's - and I like the ones that come standard with 48i - 19"Y spoke 211

I reckon I'll be spending 2 days a year if that travelling to snow with the kids, and no real offroading planned

thoughts / ideas ?? are the 20's livable on a daily basis? or will I have to increase my dental

thanks in advance for your thoughts in this one