Originally Posted by
ThermionicScott
+1. Since experimenting with the Frank Berto recommendations years ago, I have not been disappointed. No pinch flats, and the ride is much more comfortable than when I simply aired up the tires to the max pressure rating.
This calculator makes it easy:
Bicycle tire pressure calculator (I use the "Weight of (Fully-dressed) Rider & Bike" option and select the 45%/55% weight distribution regardless of the style of bike.)
I start with the 15% tire drop pressure from the calculator above and go from there. Works best to first weigh you and your bike front and rear to find out the load on each wheel and the F/R distribution. Two of my bikes are about 30/70 F/R so considerably less pressure for the front tires. (Both long wheelbase recumbent bikes.)
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Bacchetta Giro A20, RANS V-Rex, RANS Screamer