While we are on the subject of wheel slip and regen, is there a consensus on how to approach the following scenario.
I live on a street that starts with an ascent from the main road. When I leave in the morning in my 2017 Volt I usually engage L as I head down the hill at a reasonable 20-25mph, usually I see 7-9kw regen when descending the hill under dry road conditions. This winter I got lucky, we only had one snow fall that needed to be plowed and I waited until the road had been treated, sanded and the sun had melted the rest of the snow and ice on the street before attempting to drive my Volt. I am unsure of the best way of descending this same hill in winter if the road has been plowed and treated but is still covered with packed snow and ice. Other than staying home, my first choice, how should I drive down the hill under these conditions? I have the stock Michelin EnergySaver A/S tires. Should I use L or D? Should I stay off the brakes as much as possible and rely on the regen to slow my descent? I would of course drive slower than I normally would heading down the hill but even at speeds under 10mph I have lost traction when driving other vehicles and braking while descending the hill, ABS kicked in.