When racing tyre pressure is always taken hot. At the end of a practice session the driver is always asked to keep the pace up to keep the heat in the tyres so the pressure can be checked hot. Running the suspension/ tyres too hard can effect the ability to put power down on exit and a softer setting can be quicker.

We use an IR temperature gauge to check the surface temp is the same across the tyre. You can use an instant read meat thermometer but clean it before your next bbq LOL

Pressure when it is wet are normally lower than when it is dry as the corner speeds are less and so the sidewalks need less support.

So whatever one runs on the road it is a compromise as they normally have to cope with a wide range of weather conditions and driving enthusiasm.

You can change the characteristics of the handling by changing the tyre pressures front to rear. If you want sharper turn in then putting a few more psi and a little less in the back. If you want to reduce the oversteer do the opposite. Warning to all that try it it will change the handling of the car and braking with lock on could be effected.

Morgan +8
Morgan Club Sport