well, i insured my bike for the next few days, and like the other guys bike, my tire pressure has dropped. not TOO much, but to about 20psi in the front and 25psi in the back. i think ive read somewhere that in colder weather you don't want it too high, so less pressure when its cold. BUT how little is too little. my tire and user manual say 36psi for both, cold, with 0-90kg. MAX!! but how much is minimum? mind you i weigh about 120 pounds. so about 54 kg. i'll definately get it back into the thirties when the roads get a little warmer. ill be riding around the city for a couple hours at around speed limit. soo... higher tire pressure? to i guess about 33-ish? or is mine fine for now.