1994 GMC Jimmy Owner's Manual - Page 279

NOTICE: Don't let anyone tell you that underinflationor overinflation is all right.It's not. I your tires don't have enough air f (underinflation) you can get: Too much flexing Too much heat Tire overloading Bad wear Bad handling Bad fuel economy. If your tires have too much air (overinflation), can get: you Unusual wear Bad handling Rough ride Needless damage from road hazards. When to Check Check your tires once month or more. a How to Check Use agood quality pocket-type gage to check tire pressure. Simply looking at the tires will not tell you pressure, especiallyif you have radial tires the -which may look properly inflated even if they're underinflated. If your tires have valve caps, sure to put them back on. They prevent be help leaks by keepingout dirt and moisture. 6-43