Originally Posted by
BlazingPedals
When you're installing a new tube, it's a good idea to only add enough air to give the tire some shape - maybe 5 psi. Then go all the way around both sides, pushing the tire away from the rim wall and making sure you can't see the tube. Only after verifying that the tube isn't caught anywhere and is in fact where it belongs (up inside the tire) do you add more air.
^^^^^^^^
THIS
My rims have white rim tape. I make sure that the tube it not pinched under the bead on both sides before inflating.