I bought these rims a few years ago but do not use them because it is SO HARD to mount or remove tires from them. They are 26" rims that use shrader tubes. I drilled them out from presta, IIRC. They are Hawk Racing rims with sealed bearings.

Anyway, I'd like to use this front rim. Can anyone recommend a tire that would be easy to mount/remove on this rim? I prefer large tires with a smooth tread. The kind that give low rolling resistance. The bike is mainly an urban commuter.
Or anything else that would make it easier to change a flat.
Thanks in advance.