Can't get tire to seat right when changing tube I can't change tires for the life of me and I'm not sure what I'm doing wrong.  I go through the standard procedure:


Slightly inflate the tube
Put the tire halfway on the rim
Stuff the tube into the tire, being as careful as I can to make sure it's even
Put the other half of the tire on
Inflate


However, I'm obviously doing something wrong because every time I try this, on every bike I try it on, the tire is never round, and the ride is always bumpy.  I've tried inflating to beyond the recommended pressure to pop it into place, but have never had luck with that technique.  Also, since it happens more or less every time I do it, it's obviously something I'm doing wrong.

What should I be looking for here?  What can I do to prevent it?
It depends on your rims.  Some rims are much worse than others, and the effect is exaggerated with some tyres.  Some things I've found that sometimes work:


Inflate hard, let the air almost all out, then try to seat by pushing/pulling the tyre into the bead seat by hand.  Pump back up.  You may need to do this a couple of times.
After it doesn't pop into the seat properly by inflating hard, release quite a bit of the air (though not as much as in the previous suggestion) and bounce/roll the wheel (while leaning on it if you're rolling it). Add the air back gently, rolling every now and then.


Taking this to extremes: ride (gently) with the tyre almost as soft as you can without risking the rims.  Just for a few tens of meters and slowly. Pump back up.

Sometimes wetting the tyre bead to reduce friction helps.  I would use plain water for this, as it doesn't damage anything and once it evaporates it leaves nothing behind.