Tire Pressure

[Black Yaris]

Originally Posted by grampi

Not true. I can tell you from personal experience the pressure listed on the driver's door IS NOT the optimum pressure. I have found that running your tires at about 5 psi over the recommended pressure increases tread life, improves handling (stiffer sidewalls), reduces tire noise, and improves fuel economy. The only thing that's better at the recommended pressure is the ride, and even then, only somewhat better. Some people run their tires at the max pressure listed on the tire's sidewall, however I've found door pressure +5 is usually the best compromise between getting all the other bennies and a smooth ride.

well your statement as also not true, 5 psi over the recommend may cause roll over hazzards in some vehicles, the tires being too stiff will cause them to fail government safty rollover test, this was the case back with the whole Explorer/Firestone recall. no matter what tires on those mid to late 90's explorers they can not pass the rollover test with any more than 26psi in the tires. But if you know anything about tire load index's you know that 26 psi in a tire can not hold the weight of a small SUV... there inlied the problem... regaurdless, you have some holes in your theories