Hi Rivets,
Would you say your guideline for 14-16 in the front is true even if the front max PSI is listed at 40? Mine is listed at 40 PSI max. I've got the ZTL 54".
The numbers on the rim or tyre are the MAX SAFE pressures, not the recommended operating pressures.
People die from tyres or rims disintergrating when tyres are pumped up too high.
A rear tyre can have over 100 litres of air in there and when it finds a weak spot all that trapped air makes a bold dash for freedom.
If you, your eyes, ears etc are in the way, tough luck for you
A bit of dog poo on a tyre that blows can pop an eye and smash an eye socket, come out faster than a 12 bore shotgun.
Even simple things like bacteria can get blasted under your skin and cause serious health problems ( which is why you dont blow yourself down )