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NeilBlanchard · 10-06-2009, 08:29 AM

Hi,

The optional wheels for the car are 17" (the stock ones are 15") and even with the lower profile tires, they are probably larger diameter. The wheel openings are almost perfect arcs -- they are very big all around the tire.

According to the interview with the BMW aerodynamics engineer, the wheel openings are ~30% of the drag.

10-06-2009, 08:29 AM	#238 (permalink)
NeilBlanchard Master EcoModder Join Date: May 2008 Location: Maynard, MA Eaarth Posts: 7,907 Mica Blue - '05 Scion xA RS 2.0 Team Toyota 90 day: 42.48 mpg (US) Forest - '15 Nissan Leaf S Team Nissan 90 day: 156.46 mpg (US) Number 7 - '15 VW e-Golf SEL TEAM VW AUDI Group 90 day: 155.81 mpg (US) Thanks: 3,475 Thanked 2,950 Times in 1,844 Posts	Hi, The optional wheels for the car are 17" (the stock ones are 15") and even with the lower profile tires, they are probably larger diameter. The wheel openings are almost perfect arcs -- they are very big all around the tire. According to the interview with the BMW aerodynamics engineer, the wheel openings are ~30% of the drag. __________________ Sincerely, Neil http://neilblanchard.blogspot.com/