We live on a bench with a fairly steep and twisty road out of the neighborhood. With snow on the ground and temps fluctuating from above to below freezing we sometimes have ice problems. Few years back I wrecked a RAV4 after an uncontrollable slide. Today my wife was unable to drive down and barely returned back home. I was able to get out, sliding in a couple of spots and almost taking out somebody's mailbox along the way. I was literally going 1-3 mph. Both of our cars are small SUVs, AWD, ABS, and we always put winter tires for the season. I'm not sure what else I can do to mitigate the risk. Not sure if tire chains are practical or even allowed by the city.
Wife's car tires are 255/45 R20, mine are 265/40 R21 front and 295/35 R21 rear. Ideas?