Regardless of the year, your Nissan Altima needs 32 PSI in each tire for optimal safety and tire health. Tire size doesn't matter, but the weight of your car does. Proper tire pressure keeps your treads even and ensures maximum stability.
To check your Nissan Altima's tire pressure, use the TPMS or do it manually. With TPMS, find the screen inside the car. Manually, park on a level surface, remove the valve stem cap, press the gauge firmly, and take a reading. For newer gauges, the air release knob is at the bottom.
With TPMS on your Nissan Altima, adding air to your tires is easy. Park on level ground, use an air compressor, and wait for the hazard lights to flash and the horn to beep once for proper PSI. The horn will beep twice if you overinflate the tire.
Check your Nissan Altima's tire pressure at least once a month and add air if necessary. Varying tire pressures indicate the need for more air. Tire pressure can change with colder temperatures, so don't be alarmed.
Driving with low tire pressure is risky, as it can cause blowouts and make steering difficult. If the warning light appears, check the PSI and drive to a mechanic shop if it's not too low, but at a slower speed.