Drove a Volt before my i3 and a 25-35% reduction in range in cold weather was typical. In mild weather normally got 35-38 miles on a charge but in temps near 0° Fahrenheit I was lucky to get 25 miles before the ICE turned on. The cold weather range frustrations are very real but not unique to i3's
Had some concerns with 20 inch wheel but they have been excellent. They do sharpen the steering handling response and I think they look nicer in the wheel well's. My sisters car has the 19 inch, very nice ride but I prefer the 20's glad I went for them.
I paid $700 for my installation, That's the highest number of the three shops that I got quotes from. I chose my installer because of the excellent reputation for quality work and customer service. They did a great job.
Try to stay away from any type of cleaner. instead try a cloth like this:
http://www.amazon.com/4-Pack-OVERSIZED-Amazing-Microfiber-Cleaning/dp/B00IFEERU2/ref=lh_ni_t?ie=UTF8&psc=1&smid=AJ0XJ8CMXDIU6
Many similar types out there will work. Great on the switches and iDrive dial and buttons...
Ballpark number, the pair of headlights probably draw about 5 amps total. Not sure what that loss translates to in terms of reduced range. My shortest recorded range on a single charge was 73 miles, all highway 70mph with headlights and a/c running.
noticed the Orange on all of the i3's I looked at. I'm sure Merax is correct about the challenge painting composite body work represents. I polished mine with a orange peel pad, it's less noticeable maybe 50% but I didn't work the paint as hard as I could have not wanting to remove too much...
About half of the miles are driven at speeds of 55mph-65mph, the rest are a mix of city and secondary roads. My average speed per charge is a bit over 45mph according to my trip computer. Driving conditions are very consistent, temperatures are normally 75 to 85° Degrees and clear dry roads...