A few months ago I installed a set of Nokian WRG4 all weather tires. During that time it was around 50-60 degrees F and I didn’t notice any real change in efficiency. But now that we are into the cold of winter, my Wh/mi has gone up significantly from last winter (from ~280 Wh/mi to upwards around 340 Wh/mi for the same trip in the same weather- 120 miles round trip 80% highway speeds).
But I’m also constantly seeing the blue snowflake on the screen (for 50 of the 60 miles on the return trip) and limited battery heating when preconditioning the cabin.
*I never saw the blue snowflake last winter and it heated the battery very well. I know this because I could hear the rear motor whining while heating the battery. In fact, I remember last year when a software update actually increased battery heating, the rear motor whine was significantly louder. Now it’s the opposite.
And to add, it’s not the cabin heater as I’ve turned that off for 10-20 miles and the efficiency change is minimal (I only keep my cabin around 65 degrees).
I just can’t seem to figure out what’s going on. I can’t imagine these tires impacting efficiency so drastically.
I really only noticed this when the temps got down to the 20’s which happened to coincide with the V11 software update.
In summary, this car’s cold weather performance is completely different from last winter and I can’t figure out why.
Thoughts?
But I’m also constantly seeing the blue snowflake on the screen (for 50 of the 60 miles on the return trip) and limited battery heating when preconditioning the cabin.
*I never saw the blue snowflake last winter and it heated the battery very well. I know this because I could hear the rear motor whining while heating the battery. In fact, I remember last year when a software update actually increased battery heating, the rear motor whine was significantly louder. Now it’s the opposite.
And to add, it’s not the cabin heater as I’ve turned that off for 10-20 miles and the efficiency change is minimal (I only keep my cabin around 65 degrees).
I just can’t seem to figure out what’s going on. I can’t imagine these tires impacting efficiency so drastically.
I really only noticed this when the temps got down to the 20’s which happened to coincide with the V11 software update.
In summary, this car’s cold weather performance is completely different from last winter and I can’t figure out why.
Thoughts?