they were super easy to install using the OEM lug nuts (Costco would not mount to my vehicle given the tire and wheel size were not OEM... I know it’s ridiculous). Using a 235/50r19 Michelin Alpin 5 snow tire, these things don’t change the handling characteristics at all IMO; but, they sure make bumps easy on the spine compared to the all season tires on 20” wheels.
I’ve experienced NO loss in Wh/mile even with the stickier snow tires.... and they don’t feel sluggish like the blizzaks on my wife’s Mercedes.
They also provide a noticeable buffer to protect the wheels from curb rash (unfortunately and ironically I suffered curb rash at Costco right when dropping off the wheels trying to pull over in the tire bay).
Anyways hope this helps someone else in decision making.