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I wasn't able to photograph the undertray/ bumper interface, but it does look like the bumper has been refitted after the car had its wrap done, without most of it's fixing clips. I've used Zip-tie and duct-tape for a secure, aerodynamic fix. The wheel wells are the worst offenders for drag...

I'll post a photo of the rear bumper panel gap tomorrow if it's not raining. It doesn't look like wind-tunnel design under there, more like lazily refitted rear bumper. At least with a pic, other i3 owners can compare it to how theirs looks. It also looks like some sound deadening fibres are...

That's useful to know, I'll take a closer look at the ducting before 'improving' the aerodynamics and wrecking the thermodynamics.

hey OP, don't listen to the oldies about bearing wear and suspension geom compromise. Metallurgy and bearing design has come a long way since that old scare story about mini coopers with 9J wheel rims were collapsing 20yr old ball n cage bearings. Yes the increased offset does add more stress...

Has anyone made any bodywork mods that have improved the i3's aerodynamics enough to show a noticeable improvement on efficiency? I looked around the car for any obvious air dams or restrictions to good air-flow. I noticed the rear bumper under-tray doesn't fit together very closely. The rear...

Closure on this thread, I had the warning light diagnosed at the local BMW dealer. The service was excellent, and as an unexpected bonus they reset the warning light under the warranty, even though it was caused by the -30mm springs giving readings the DSC sensor didn't compute. The low battery...

If any of you have tried driving your i3 in 'roller' mode (traction, ABS, dsc and regen braking off), you'll be surprised how hard you have push the limits to lose traction on a dry road. On very loose surfaces, snow or 'road like a river' I'm sure you'll get some spinning and sliding. I've been...

thanks for the input, I run my tyres at 50psi and check them regularly (watching for any uneven tread wear). I've done 1200 miles with the higher pressures. I lowered the car with -30mm eibach springs about 200 miles ago. The warning light could be linked to the sensors not receiving expected...

Hi All, has anyone had warnin lights displaying after running the battery down to 1% remaining? The message 'initialisation of stability system ' and the skid marks icon is showing after I reach 6mph. In the 'Settings' main menu I can see traction ticked as 'Normal' but below that is the...