Every winter, my brother-in-law teases me for putting winter tires on our two SUVs. He says they’re a cash grab and aren’t necessary with all-wheel drive. He thinks that if winter tires really made a difference, they’d be required by law. – Jamal, Edmonton Winter tires aren’t just for snowflakes. If you live anywhere in Canada with snow and ice, which is almost everywhere, they’re better than all-seasons at keeping you from sliding into the ditch. “Should most Canadians be using winter tires?