The A340 has this option and it shows the tire press. For practical purposes you should have in mind the aquaplaning speed ,and it is calculated as follows;
7.7x squqre root of the main tire pressure. when you depart your tire pressure is correct hopefully because it is part of the checks done by maintenance and the pilot just has to satisfy himself during walkaround that it is o.k otherwise he can have it checked . So for example the aquaplaning speed for the L1011 is 112 knots. I hope this will be an answer to the inquiry , the tire press you can get from your Manual .