I wonder what is going on with my air pressure in my tires. In the past I have only had to check the pressure occasionally, like once every few weeks and usually did not have to add air to either tire. Starting in the late Fall I found that even after just a few days, if I rode off without checking the tire pressure the warning light would come on, and sure enough, the tires were both down 5 or 6 psi from where I had left them (I usually keep both at 40). The other day, after not riding for several weeks, the weather turned warm and I didn't want to miss out on the chance of a ride so I unhooked the Battery Tender, pulled the rags out of the pipes, and fired it up. Then I remembered the tire pressure and laid down on the ground to check both, and sure enough, they were down to 30 in front and 28 in the rear. The tires are fairly new and have not had this problem until recently. It seems unlikely that I have damaged both rims that now allow some air to leak out, so I am wondering what might be the cause of the problem. Its especially annoying when I compare this to the Triumph Thunderbird I used to ride that I could go an entire riding season without having to add any air pressure at all.