ADAC has posted their latest tests online, of 3 different winter tire sizes.
http://www.adac.de/infotestrat/tests/rei...rcePageId=31821
http://www.adac.de/infotestrat/tests/rei...rcePageId=31821
http://www.adac.de/infotestrat/tests/rei...rcePageId=31821
http://www.adac.de/infotestrat/tests/rei...rcePageId=31821
http://www.adac.de/infotestrat/tests/rei...rcePageId=31821
http://www.adac.de/infotestrat/tests/rei...rcePageId=31821