Just checked the pressure on my tires after 300 miles of riding and the rear was down to 20#. The last time I inflated, I put 30# in the rear, so I am wondering if this amount of loss seems reasonable? I inflated to 36# which is the 2-up specification since I am a big girl. Put the bike on the center stand and rotated the rear tire to inspect it but did not see any tears/rips, embedded objects or other damage, so I plan to keep a close eye on it to see if there is a pattern. Just wondering if this is anything of concern at this point. TIA!