A quick search didn't find a thread on this topic, but if there is one, please point me to it.
I'm a fairly new Leaf owner, although I am already on my second one. About a month ago, I bought a 2013 S. When I bought it, it had 10 bars, but a few days ago it dropped to 9. It could go about 110km on a full charge on my freeway test, maintaining about 90km/hr.
In case anyone is not conversant with metric, and if I correctly recall Canada's pre-metric days, 90km/hr is approx. 55mph, and 1 km is approx .6 mile (or 1 mile is 1.6 km).
Two days ago, I traded it for a 2016 SV because I wanted longer range, cruise control, 12 bars of battery and the option of fast charging. The SV has all of those, and the salesguy estimated it would go about 175km on a full charge.
I took it out for a bit of a range test yesterday. I was on a relatively flat freeway with no wind and little traffic. My winter tires are 205 50R16 instead of the stock 215 50R17, so I have calculated my speed and distance taking into account the approximate 5.5% smaller circumference. I set cruise control at 95km/hr (approx 90 actual)
At the start of the first leg, the battery showed 83%, the "distance estimator" (that's what I'll call it) estimated that I could go 148km. After 57km, the estimator estimated I could go another 65km. In other words, the estimate dropped 83km in the 57km I travelled.
I quick charged to 91%, which now estimated I could go 154km. I travelled 114km, and the estimator said I could go a further 14km. In other words, the estimate dropped 140km in the 114km I travelled.
I have now charged to 100% and the estimator says that I will be able to go 162km. By extrapolating my results from yesterday, I think it will only go about 135km, or approx 83% of what it estimates. While any of my calculations may be slightly in error, I think it's clear that it's a significant overestimation.
I assume that the smaller tire size would not account for this, because although the wheel has to spin faster to obtain a given speed, is should be less stress on the motor to turn it. If I am wrong and this is the problem, please advise.
I read that there was a concern of rapid degradation of the 30Kw battery packs, but that Nissan said it was a software bug that caused the vehicle to think it had less range than it actually had, and that it could be fixed with a software update. Could this be related to that problem?