Welcome to the ultimate BMW X3 community.
| 11-21-2011, 04:44 PM | #1 |
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Criminally Insane
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Anyone track their F25 yet?
I haven\'t had the pleasure, but to try and get my better half to understand my hobby, she took the 30d out for a ladies only track day.
The car did well, and kept up with a lot of serious petrol engined cars. I just need to talk her out of going again in my Z4.  Anyone else take their X3 to a track?
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 Dr Stig 2010 Z4 35is 2011 X3 30d M Sport Australia |
| 11-22-2011, 01:13 AM | #2 |
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F25 X3 2.0 Diesel
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Im dying to know how a x3 20d does in a quarter mile, can't find any info on that anywhere, estimates put it in the mid 16s
has anybody tried it? |
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| 11-23-2011, 10:27 AM | #3 | |
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| 11-23-2011, 12:00 PM | #5 |
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Nerdy theoretical response
Your post about 1/4 mile got me thinking about kinematics.
If we use the formula S=ut 1/2at^2 Where S is the distance, u is the initial speed a is the acceleration and t is time. We have: 1/4 mile = 0 1/2at^2 We need everything in SI units and 1/4 mile is about 400 metres. The acceleration of a 2.0d is 0 to 100kmh in 8.5 secs which yields an acceleration for the formula of 3.2679m/s^2 Putting these variables and rearranging the equation gives us Sqr(400/(3.2679/2))=time Which is 400/1.6339=244.8... The square root of which is 15.64 so very close to your 16sec estimate. Obviously assuming continuous acceleration performance is wrong and at the end of the quarter mile you would be doing about Now I am going to get a life! |
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| 11-23-2011, 03:23 PM | #7 | |
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 BMW F25 X3 xDRIVE 20d SE Black Sapphire | Oyster Leather | Fineline Sienna Wood | 307 V Spokes | Auto | Prof Multimedia Package | xLine Package | Xenons | Business Radio | Sports Steering Wheel | Sports Seats | Panoramic Sunroof | Sun Protection Glass | Sun Blinds | Folding Ext. Mirrors + Titanium Grille | Chrome Exhaust Trim | Mudflaps |
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| 11-23-2011, 03:34 PM | #8 |
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Tracking in this thread refers to taking your X3 to a race track.
Owning a 30d I would estimate the quarter mile comes up close to the 15/16 sec range. Not fantastic but not too shabby either.
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Dr Stig 2010 Z4 35is 2011 X3 30d M Sport Australia |
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| 11-23-2011, 04:37 PM | #9 |
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no videos?
Plan on tracking my X3 on both the road course and 1/4 mile... should surprise a lot of people
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| 11-23-2011, 04:56 PM | #10 | |
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The roof rails should help minimise damage to the paint. Hope you aren't the one who is surprised.  *It does make a nice tow vehicle, however. Last edited by Lotus7; 11-23-2011 at 05:46 PM.. |
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