Need an ignition interlock device near Scottsdale? Intoxalock is available at Big O Tires, a certified Intoxalock ignition interlock installer. We can install your breathalyzer in cars, trucks, vans and other vehicles.Big O Tires is a nationwide brand offering services in batteries, alignment, brakes, tire services and suspension. Ask us about our specials! In addition, Big O Tires of Scottsdale, AZ became an authorized ignition interlock installation location for Intoxalock in 2014.