1994 Pontiac Firebird Owner's Manual - Page 218

When to Check: Check your tiresonce a month or more. Don't forget your compact spare tire. It should be 60 psi at (420 kPa). How to Check: Use a good quality pocket-type gage to check tire pressure. Simply looking at the tires will not tell you the pressure, especiallyif you have radial tires - which may look properly inflated even if they're underinflated. If your tires have valve caps, be sure to put them backon. They help prevent leaks by keeping out dirt and moisture. ll r\/t J t I 4- 4-I -a4 M I Tire Inspection and Rotation To make your tires last longer, have them inspected and rotated at the mileages recommended in the Maintenance Schedule. See "Scheduled Maintenance Services" in the Index. If you don't have P245/50ZR16 size tires: ' use the rotation pattern shown abovefor your size tires. I A I I F you have P245/50ZR16 size tires, they 1 for IIlust roll in a certain direction the besl 0vera11 performance. The direction is SIhown by an arrow on bothsidewalls. Blecause these tires are directional, they SIhould be rotated asshown in the e: xample above. These tiresshould only be moved from front to rear and rear to fl-ont onthe same side ofthe vehicle. ALfterthe tires have beenrotated, adjust tlle front and rear inflationpressure as SISown on the Tire-Loading Information 12lbel. Make certain that all wheel nuts are roperly tightened. See "Wheel Nut P: Torque" in the Index. 217.