Notubes ZTR Flow
rims at 470 grams and inner width of 23mm.
Continental Trail King(former Rubber Queen) with enlarged casing. Their 2.2 is actually closer to 2.35(excellent rear tire), and 2.4 version is 2.5(running this one up fron and always get comments of how big it is) Ridiculously fast tire with very low rolling resistance. Very grippy if you get them with Black Chili compound. I run UST version with ZTR Flows and yellow tape, will never switch to anything else.
Edit: also, if you look at the ZTR rim profile, tire hinges are very low and allow more tire volume to be used. It is their signature design. Very good for tubeless setup.