There is no use for changing only two winter tires no matter it is front wheel drive or rear wheel drive or even all wheel drive. 4 K1 Q# I+ z& O: Y8 ?* Z3 x$ ] & K2 @1 E: l. l- x9 s5 xI watched a flips for the car equipped only 2 winter tires and 2 normal tires, when break or cornering, it is no different or even worse than no winter tires. ; T1 T k& X' C) v , T( M- J( g5 W( U" S5 _( x0 A+ D * X; b5 N% \. d) r0 S9 ^2 c" M8 b3 SSafty first, Canadian Tire clerk is wrong, he should not recommand change only two tires