@SageBrush It's pretty remarkable that you get that kind of range in winter, but I'm guessing altitude, and therefore thinner air, is making a big difference for you in Colorado.
Air resistance has a linear relationship to air density, and Denver air density is about 85% of the air density at sea level, all other things being equal.
Out on the wet coast, at sea level, I get more like 55-65 miles range, with winter tires on, and my SOH is still low 90s. Like you, I use the heater sparingly, but we get a LOT of rain and wet roads drop my LEAF's efficiency a lot.
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV