GOM mystery solved

  • Thread starter Thread starter vader
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Puppethead said:
I think it's better the GOM is conservative, instead of the alternative where the car says you can go 150 miles and then conks out at 100 miles.
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Absolutely. My first EV was an early 2012 Nissan Leaf. It was rated for 73 miles of range. With a full charge it would promise 100 miles. Then you drive 25 miles and it says you have 30 miles remaining!!! Then you drive another 25 miles and it would say you have 25 miles remaining. There was no logic in that GOM. It was as if Nissan was trying to induce range anxiety. If that was the goal, let me tell you, it worked!


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Minicris said:
Do all of you that are getting 100+ miles range have the stock wheels and tires from factory? 95% of my driving is highway at 65MPH on flat roads. We do not have stock wheels and tires and I wonder if that affects it that much. The most miles I've ever gotten was 94 and I pulled in the driveway with 0 left on the GOM.
Range anxiety is definitely real over here.
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Stock wheel/tires are specifically designed for low rolling resistance and the gear reduction and motor windings are precisely matched for a certain circumference of wheel to achieve the maximum efficiency. The key is the circumference to be the same with alternate tires and the tread hardness. Snow tires have a softer tread and roll harder. Wider tires also create higher rolling resistance. With the higher relative weight of an EV you also have a higher wheel loading and rolling resistance compared to an ICV. So changing wheel packages is a complicated and very narrow option on EV's.
 
Yes we have the stock rims and tyres.
In our case the 16” Victory wheels.

To get under 100 miles of range I’d have to really drive it like I stole it, or be in sub zero temperatures (freezing temp resulted in an 18% drop in range in my tests iirc, but given I get close to about 125 miles+ at 70mph in perfect weather I’d still get just over 100 miles at 0degC (32F).
However as temps go even further below freezing and if I had sports tires vs efficiency tires on the car, and I didn’t precondition and I travelled every where at 8ph and nailed it off the lights in sport mode then sure I can see us going down to 80 miles or less.
But honestly, I struggle to get it below 130 miles here in Texas, even in summer with the AC going flat out…
 
I have the stock wheels/tyres. Goodyear f1 asym 3 on 17 inch tentacle spoke. I always drive in sport mode, hammer it at ever light (it is fun), but religiously stick to the speed limit using the limiter. The blue pixies over here like to fine you at every opportunity. Our temps are a lot higher than most on this board, rarely going below 20C (maybe down to 10C overnight in winter). So long as I stick to the limit, I actually can't see that I would ever be able to get near (down to) 100 miles. There is no trailer option, and I regularly have 3 people in the car - sometimes 4. Maybe a trip in the NT (Northern Territory) where there are no speed limits might get close, but realistically I would have trouble getting below 125 miles. Remember that the air at 0C is about 10% more dense than the same pressure at 27C, so at freeway speed you probably lose 7-8% just in aero alone in cold temps.
 
vader said:
Maybe a trip in the NT (Northern Territory) where there are no speed limits might get close, but realistically I would have trouble getting below 125 miles.
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How far is the typical distance and the longest distance between DCFC charging stations in the NT? I'm always impressed by Australian warning signs like this one for fossil-fueled vehicles:

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I checked on plug share, and there are ....... 2 "fast" chargers (22kW) in the Northern territory, one at Alice Springs, the other in Darwin. They are only 1500km apart :) There are numerous places that you can pick up 7-22kW power sockets (no charger) at caravan parks and hotels though. From the look on plugshare, maybe 200-250km max between them. Might make for a very long (time) road trip though without fast charging. Now the aptera could make Alice to Darwin in one go - and charge on the way (solar). So in an ironic way, there may be more regular EV charging opportunities than petrol....
 
insightman said:
I'm always impressed by Australian warning signs like this one for fossil-fueled vehicles:

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I don't know if there are any of these still around in the western US, but I remember them being somewhat common far west of the Mississippi when I was younger (1970s). That was a time when we didn't have truck stops at every exit and you had to plan your road trip fueling stops beforehand. I think current-day EV road tripping is a throwback to the romance of that era, where the traveling portion of a trip was as important as the destination.

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Aside from parts of Australia, Canada, and the US, are there any other areas where refueling (fossil fuel or recharging) opportunities are far apart? It's amusing that we look back at "the good old days" with enough nostalgia and selective recall to call that romance. [Of course, when we look at what we have wrought on climate, those days might really be "the good old days".]
 
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