The instruments on TPMS enabled models Speed Triple 2011MY, Tiger 800 and Tiger Explorer have been designed to work seamlessly with the new accessory Tyre Pressure Monitoring System. Current front and rear tyre pressures are displayed via the instrument panel with automatic waing alerts if tyres are below optimum levels.
Unfortunately TPMS is not the Triumph Pre Menstrual Stress Monitoring System that's still down to nature!!
A9640057 has been replaced by A9640169.