The lifespan of brakes can vary depending on several factors, including the driving conditions, driving style, and the type of vehicle. While it's difficult to provide an exact duration for how long 1 mm of brake material will last, I can offer you a general guideline.
Typically, a set of brake pads or shoes for a vehicle is manufactured with around 8-12 mm of brake material. When the brake material wears down to around 3 mm, it is usually recommended to replace the brake pads or shoes. However, this can vary depending on the manufacturer's recommendations and the specific vehicle.
Assuming the brakes wear down evenly, you can estimate that each millimeter of brake material will last approximately one-third to one-fourth of the total lifespan of the brake pads or shoes. So, if we take a conservative estimate, 1 mm of brake material may last anywhere from 3,000 to 4,000 miles (4,800 to 6,400 kilometers). Please note that this is a rough estimation, and the actual lifespan may vary.
It's important to regularly inspect your brakes, listen for any unusual noises, and have them serviced or replaced by a qualified mechanic when necessary. Additionally, following the manufacturer's maintenance schedule for your specific vehicle will help ensure optimal brake performance and safety.