Pirelli may be best known for making tires, but overseas it's doing everything from sneakers to watches. Their latest wrist clock is called the PZero Disk_O, and as you can plainly see, its design is dominated by a disc brake and caliper – not unlike Hublot's F1 watch, but surprisingly even more pronounced. The anodized aluminum bezel even rotates through the caliper just like a real brake disc (or like a diving watch, sans the numbers). Like the brakes on some higher-end supercars, the caliper – from which the pushbuttons for the Swiss quartz chronograph movement jut out – can be ordered in different colors: red, yellow, black or steel gray.
Given the brand behind the Disk_O, it should come as no surprise that the strap ditches the steel bracelets or leather bands for rubber, but while previous pieces in the PZero timepiece collection had straps modeled after rain tires or vintage rubber, the Disk_O's are styled after racing slicks.