I can't say anythign beyond look at the TireRack reviews.
For the record - I tried to drive my car for the first time on Friday. It took about 5 minutes to get out of my parking space and I couldn't get out of the lot to my apartment bldg. (unplowed packed sn-ice, w/ emergency vehicles blocking aisles and forcing careful driving (long story)). After getting half-stuck about 3 times in 100 yards, I just reparked it. My car would spin the tires at idle in 3rd gear! <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'> Summer tires 0wN3d me <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt='
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