SACRAMENTO, Calif. --- A recent study by the California Integrated Waste Management Board underscored how negligent consumers can be when it comes to tire maintenance. The study, summarized in a news report in the Contra Costa Times, found that although three-fourths of respondents knew that they should check their tire pressure regularly, only half actually did so. Most respondents reported there was "no need" to check their tires more often or said they did not have the right equipment, expertise or time to do so. The board has launched a two-year campaign to improve tire safety and extend the life of tires as well as promote the purchase of tire-derived products and other recycled materials. Conducted in September, the study revealed that most respondents were uninformed about tire safety. Only 60 percent of people surveyed knew that proper tire maintenance increases safety. In partnership with the Rubber Manufacturers Association, the board offers these tire safety tips: • Measure tire pressure monthly using a good quality tire gauge. A visual inspection isn't sufficient to detect under- or over-inflated tire problems. • Have tires aligned regularly and check owner's manual for specific recommendations. A pulling or vibration sensation means that alignment should be checked sooner. • Rotate tires regularly, usually every 5,000-8,000 miles. • Monitor tread wear and replace tires when tire tread is worn down to 1/16 of an inch. Proper tire tread prevents skidding and hydroplaning. • Tires should be balanced periodically or when drivers feel a vibration. • Conduct a visual check for embedded stones, glass and other objects that could cause a leak.