Prolific Poster Award
Join Date: Feb 2004
Location: Canton, Ohio, USA
the line about racers using the hot pressure as a barometer of the tire's temp is nonsense. racers use a pyrometer to measure the temp and pressure gauge to measure the pressure. there's no guessing.
also, they use the hot pressure because that is the only number of any use during practice, qualifying, and race. during a session, if you suspect the current pressure is not giving the best performance, you can't wait for the tire to cool to check the pressure and then make your change. you take the reading as it comes off the track, make your adjustment (hopefully down), and go back out.
after the track events are done for the day and the tires have cooled to ambient (preferably a temp close to what it will be just before the next session), you'll take another measurement and that is your new baseline cold pressure.
'91 851 SP3, '66 250 Monza, '99 Monster 900 City, '98 ST2
'99 Monster 750, '66 Riverside 250, '66 Riverside 250