Tire Pressure Gauges, How to know if it reads correctly? Options

[bandjoey]

I have 3 pencil air gauges and one dial analog gauge. They range from 3lbs low to 8 lbs high across the 4, when checking one tire.

How can we know if a gauge is reading right? Where is the tester for the gauge? (IMG:style_emoticons/default/confused24.gif)

[Jakeodoule]

At bigger races, both auto or motorcycles. There is almost always a big tire supplier. They have a test station where you are free to check your gauges.
Every other time I go to an event I take my gauges and test em for accuracy.
Its got a big dial gauge or digital read out that shows the pressure and a shrader valve for you to test your gauge.

I would agree having all your tires the same is a key. However I think having the right pressure is just as important. Not to sure about cars, But if I was racing my roadracing motorcycle with the pressure off 4 lbs.... I would not be getting the tires to the right temp or getting em too hot.

[SirAndy]

Not to sure about cars, But if I was racing my roadracing motorcycle with the pressure off 4 lbs.... I would not be getting the tires to the right temp or getting em too hot.

That's why we take tire temps at the track. Way too many factors that play into this, pressure is just one of them.

One pressure won't work at every track on every day. Heck, even the time of the day can influence what pressure to run.
Is it sunny or shady? Rain? Morning, noon, evening?

Tire temp will tell you where your pressure needs to be for that day and time and track.

There is no one correct tire pressure for your car.
(IMG:style_emoticons/default/popcorn[1].gif) Andy

PS: However, none of that is really important for a street car on street tires. You'll be hard-pressed to find someone who can tell the difference between 30lbs and 34lbs on a street 914 with street tires ...