Browser incompatibility. The website support browser with IE9 and above, with no Compatibility View settings.
Reference pressure at 20 deg C:
Reference pressure is a temperature-compensated
tire pressure referenced back to a standard temperature of 20 degree Celsius.
This is useful and serves as a guide for the user to decide on the approximate
amount of air needed to inflate the tire during hot season or immediately after
a long drive.
The reference pressure reading is
located above the actual pressure reading in blue with smaller font size. The
user has an option to show / hide the reference pressure reading for individual
profile by going to the “settings” at top right corner on the car status