1994 Cadillac Fleetwood Owner's Manual - Page 308

When It's Timefor New .Tires One way to tell when it's time for new tires is to check the treadwear indicators, which will appear when yourtires have only2/32 inch (1.6 mm) or less of tread remaining. You need a new tire i f 0 You can see the indicators at threeor more places around the tire. 0 You can see cord or fabric showing through the tire's rubber. The tread or sidewall iscracked, cut or snagged deep enough to show cord or fabric. The tire has a bump,.bulge or split. 295