20" 214's in the rain

[X5_Newbie]

Originally Posted by pb48

Summer performance tires are designed with exceptional wet grip in mind, and will definately out-perform an all-season tire in this respect. The only thing you need to keep in mind is, as mentioned above, hydroplaning. It is the wiiiide footprint that increases the chances of hydroplaning, especially as the tires wear down. Otherwise, performance tires can channel more water out of the treads then typical all-seasons. In general, be aware of large pools of standing water at highway speeds and you'll do fine.

I ran summer performance tires on all my cars (and winter tires for winter season) and can confirm the above 100%.
Given the weight of the X5, even the 20'' shouldn't be problematic - as it was confirmed by the other posts.
Go for them - but of course even the best tires can't help when you don't drive safe and according to the given weather situations.

[JA330xi]

On the issue of wheel damage... I've had to have (17")wheels straightened twice in the last 18 mos on my 330xi thanks to Boston roads. I don't know how the 20s would stack up on the X5.