Continental recommends fitting tires with the same brand, size, tread pattern, load index, and speed rating to every wheel position on your car.
Mixing tires
Cheap Tires Shop Philippines Archives - Sailun Tires
Avoid Mixing Tires - Advance Treads
The Reasons You Shouldn't Mix Tires - big No No!
Is it OK to Mix Tires on a Car or Truck? Old & New? Winter & All
Tires and Wheels Tech Specifications
Mixing Conti's and Michelin - XBimmers
Is Mixing Tires a Bad Idea? - Burt Brothers Tires & Service
Why You Shouldn't Mix Tires - JB Tools Inc.
What Tires Should I Avoid? Best and Worst Tires - Tire Agent
Blog, Ayr Farmers Mutual