Nice deal if you are in the market for tires - See mycertifiedservice ca website for details
Available at most GM Canada dealerships. Have to apply for (if you don't already have it) and put the transaction on the Scotiabank GM Visa card. You can defer payments for 90 days interest free if the transaction is over $250.

Additional instant discount/mail-in-rebates available on select brands.

Instant $50 off Bridgestone/Firestone
Up to $100 off in mail-in-rebates for select Goodyear winter tires
Up to $100 off in mail-in-rebates for select Pirelli winter tires
$40 off in mail-in-rebates for select Kumho tires