Do I really need RFT snow tires or would non-RFT with "tire repair in a can" do? Canadian model BMWs do not have tire pressure sensors. Comments?

__________________
"Capt. Malcolm Reynolds: [the Operative has politely asked Mal to return River] You have to open with payment.

The Operative: That is a trap. I offer money, you'll play the man of honor and take umbrage; I ask you to do what is right and you'll play the brigand. I have no stomach for games. "