SteveMondragon
Posts: 12
Joined: Sat Nov 14, 2015 10:28 pm

i3 top speed

Mon Dec 28, 2015 1:06 pm

I've always read that it was 94 mph, or around there. Well I hit it a few times this morning driving into work. It's like basically hitting a wall and not being able to go any faster, even though the car feels very stable and could keep going.

Ironically, the "flow of traffic" speed today was between 85-100 mph the entire way, and I was still getting passed by cars when I maxed out on the speed.


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eneka
Posts: 91
Joined: Thu Nov 12, 2015 1:57 pm

Re: i3 top speed

Mon Dec 28, 2015 2:21 pm

you should confirm it with a GPS! BMW's are known to bump up the speedo quite a bit, and more so at high speeds haha
2015 i3 rEX Arravani Grey giga, parking, tech, 20"

SteveMondragon
Posts: 12
Joined: Sat Nov 14, 2015 10:28 pm

Re: i3 top speed

Mon Dec 28, 2015 8:18 pm

Yeah, that sounds about right.

I was going 42 mph the other day and the radar on the speed limit sign said 38 mph. It wasn't the first time I noticed a lower speed recorded, but not by that much (usually just 2-3 mph).

i3Alan
Posts: 234
Joined: Wed Jul 09, 2014 4:08 pm

Re: i3 top speed

Tue Dec 29, 2015 11:56 am

SteveMondragon wrote:I was going 42 mph the other day and the radar on the speed limit sign said 38 mph. It wasn't the first time I noticed a lower speed recorded, but not by that much (usually just 2-3 mph).
The radar speed reporting signs are typically calibrated for the closest lane passing them. If you are two or more lanes away, then the sign will read less than your actual speed (the error increases by the cosine of the angle between your direction of travel and the line of sight to the radar).

janner
Posts: 230
Joined: Sun Jan 25, 2015 5:24 am
Location: Bath, UK

Re: i3 top speed

Tue Dec 29, 2015 12:06 pm

With a CD of 0.3 and a frontal area of 2.38 the i3 on 125kW could do 140mph if it wasn't gear or software (or battery discharge rate) limited.
2015 i3 ReX Solar Orange, Loft interior world. BMW professional, 19" turbine-spoke 429 wheels, DC rapid charging, driving assistant plus.

jadnashuanh
Posts: 3504
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: i3 top speed

Tue Dec 29, 2015 12:57 pm

To go faster would require at least another gear in the transmission, more complexity, and weight affecting range all of the time.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV

jadnashuanh
Posts: 3504
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: i3 top speed

Tue Dec 29, 2015 12:57 pm

To go faster would require at least another gear in the transmission, more complexity, and weight affecting range all of the time.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV

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