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Just curious, are you able to keep the sensors awake to read more often? I always thought they only polled every so often (which is how they make batteries in them last 7-10 years)The TPMS sensors are always a little sketchy IMO, I would try to go with the factory Ford ones, however I have had success using the ones from American Muscle in my Gt500. If you are planning to "map" with them let me just say they are another tool in the box, no racer that I know of uses them for the absolute pressure adjustment. The reason is that your tire pressure around the track, and depending on the track configuration, length and duration of corners, due to all that, will very at least 3 to 4 psi. When we look at the numbers from the TPMS (and the Astin has to be read because we aren't allowed telemetry) we look for a "window" that the psi will stay in. Even with the Porsche, which had telemetry, depending on where on the track the car was, the pressure varied greatly, so it comes down to a point where you still do the temps and pressures on pit lane, and only reference the TPMS data.
I'm sorry, I really cant go into that, but if I think that tire pressures are too low to let the car go out on, I put them in the sun to get the starting pressures up. This is why F1 uses tire warmers. We aren't allowed to do that so we have to set them outside. This really becomes an issue at Daytona in January when it can get into the 30s. This is one reason that I always say that a psi without a temp reference is useless.Rob,
how do you know or calculate minimum safe tire pressure?
I put them in the sun to get the starting pressures up. This really becomes an issue at Daytona in January when it can get into the 30s. This is one reason that I always say that a psi without a temp reference is useless.