Yesterday I took off my studded tires and put on some skinny street tires as our ice is melting in the streets and I can ride without studs. I'm about 4mi down the road and I feel a thump thump thump so I stop, thinking I have some odd flat but the tire is not flat. I had failed to inflate it full enough to pop the bead in place. I took out a C02 cartridge and forced air into the tire till it popped in place, let some air out and took off again. Whoa! In just a minute or two I feel a thump thump again and I stop but now it's the FRONT tire. It's not impossible that I simply didn't notice this earlier but jeez...it was pretty pronounced...I fixed the second tire with more CO2 and was on my way.
Is there ANY way a tire can get a bead to move so as to create this issue? I think it's most likely that I simply didn't feel it as it was the start of the ride; I can't think of anything else so just curious...anyone ever have this happen ... they find a bead not properly seated part way into a ride?