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by engineeringDynamo
Mon Mar 22, 2021 9:40 am
Forum: Suggestions for BMW
Topic: wish the rear window was bigger
Replies: 2
Views: 954

Re: wish the rear window was bigger

The i3 doesn't have great rear visibility.
But most of the newer designs are even worse.
I just drove the VW id.4 and Tesla Y, and rear visibility in both is terrible.

i3 - Even if you love the glass below the part you can see through, wouldn't it be nice to see through another inch or two?
by engineeringDynamo
Mon Mar 22, 2021 9:35 am
Forum: Suggestions for BMW
Topic: want a 18 or 19 inch wheel option for i3s
Replies: 1
Views: 929

want a 18 or 19 inch wheel option for i3s

The i3s only comes with 20inch rims.
I wish there was an 18 or 19 inch wheel option.
Reasons:
Improved driving comfort
Less likely to destroy a rim or tire
Very likely improved performance

IMO the 20 inch rims are a victory of marketing over engineering.
by engineeringDynamo
Sun Feb 28, 2021 11:13 am
Forum: Suggestions for BMW
Topic: wish the rear window was bigger
Replies: 2
Views: 954

wish the rear window was bigger

On the back of the i3 is a lot of glass that you can't see out of. The glass below the portion you can see our of doesn't seem to serve a purpose. The glass below the portion you can see out of just adds extra weight to the i3 where you don't want it. BMW could increase the size of the portion you c...
by engineeringDynamo
Sun Feb 28, 2021 11:03 am
Forum: Suggestions for BMW
Topic: improve aero by making underside smoother
Replies: 3
Views: 1123

improve aero by making underside smoother

The i3 is not as smooth as you would expect underneath.
Most notable is the big space where the engine would be if my BEV were are REX.
If this space had was covered, I wonder how much more efficient the car would be at highway speeds.
by engineeringDynamo
Wed Aug 30, 2017 8:29 am
Forum: Modifications & Accessories
Topic: Looking for smaller rims for my i3
Replies: 7
Views: 7337

Re: Looking for smaller rims for my i3

According to Engadget, the i3s will come with 20in rims.

https://www.engadget.com/2017/08/28/bmw ... bocord-ev/
by engineeringDynamo
Thu Aug 10, 2017 12:49 pm
Forum: Modifications & Accessories
Topic: Looking for smaller rims for my i3
Replies: 7
Views: 7337

Re: Looking for smaller rims for my i3

I am not trying to put a wider tire on my i3. I am looking for a wheel+tire combination that is the same bolt pattern, tire width, and tire outside diameter as the original setup. It must weigh less, and have a lower moment of inertia about the axis of rotation than my current 19in setup. Because th...
by engineeringDynamo
Wed Aug 09, 2017 10:40 pm
Forum: Modifications & Accessories
Topic: Looking for smaller rims for my i3
Replies: 7
Views: 7337

Looking for smaller rims for my i3

I want to get 16, 17, or 18in rims for my i3, but I am not able to find any.
IMO big rims are a triumph of marketing over engineering.
by engineeringDynamo
Mon Aug 07, 2017 8:56 am
Forum: General / Main i3 Owners Forum
Topic: Changing the wheels on my i3
Replies: 9
Views: 8236

Re: Changing the wheels on my i3

busaman wrote:has anybody thought of trying 18" rims with a higher profile tyre in theory would take some of the harshness out of the ride.
I can't find 16, 17, or 18in rims for the i3.
IMO large rims with low profile tires are a sign that marketing has won an argument with engineering.

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