1998 Buick Park Avenue Owner's Manual - Page 324

One way to tell when it's time for new tires is to check the treadwear inciicatdlrs, which will appear when y Q x tires have only 1/16 inch (H .e mm)car less of tread remaining. 8 The tread or sidewall is cracked, cut or snagged deep enough to show cord OF fabric. If you ever replace YOUF tires with those not having a TPC Spec number, make sure they are the s m e size, load rmge, speed rating and ~ O I - L S ~ I U C ~ ~ Q(bias, type ~ bias-beited or radial) as your original tires.