Cadillac 2011 STS Owner's Manual

Also see for 2011 STS: Brochure Specifications Owner's manual

Black plate (69,1)Cadillac STS Owner Manual - 2011Winter tires with the same speed rating as youroriginal equipment tires may not be available forH, V, W, Y and ZR speed rated tires. If you choosesnow tires with a lower speed rating, neverexceed the tire's maximum speed capability.{ WARNING:Mixing tires could cause you to lose control whiledriving. If you mix tires of different sizes (otherthan those originally installed on your vehicle),brands, or types (radial and bias-belted tires), thevehicle may not handle properly, and you couldhave a crash. Using tires of different sizes (otherthan those originally installed on your vehicle),brands, or types may also cause damage to yourvehicle. Be sure to use the correct size, brand,and type of tires on all wheels. It is all right todrive with your vehicle's compact sparetemporarily, it was developed for use on yourvehicle. See Compact Spare Tire on page 6‑105.{ WARNING:If you use bias-ply tires on the vehicle, thewheel rim flanges could develop cracks aftermany miles of driving. A tire and/or wheelcould fail suddenly, causing a crash. Useonly radial-ply tires with the wheels on thevehicle.If you must replace your vehicle's tires with thosethat do not have a TPC Spec number, make surethey are the same size, load range, speed rating,and construction type (radial and bias‐belted tires)as your vehicle's original tires.Vehicles that have a tire pressure monitoringsystem could give an inaccurate low‐pressurewarning if non‐TPC Spec rated tires are installedon it. Non‐TPC Spec rated tires may give alow‐pressure warning that is higher or lowerthan the proper warning level you would get withTPC Spec rated tires. See Tire Pressure MonitorSystem on page 6‑60 .6-69