Originally Posted by
TenGrainBread
I'm not sure why anyone would put 90 pounds of pressure in a 32mm tire. That gets rid of all the benefits of going wider. 60-70 PSI is a better range for that width. 90 PSI is more suited for 25mm tires.
It would make a lot of sense if those tires were on a tandem. It all depends on the weight they have to support. There's an excellent chance 90 psi wouldn't be enough - again, depending on the load involved. Recall, the OP said "I remember when 28x700 were our tandem tires, and were considered big. Now we have 32x700 tires on our last tandem..." and it wouldn't be outrageous to have a total load of over 300 lb on a tandem, between the captain, the stoker, the bike itself and the luggage.