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Old 08-18-2012, 09:15 AM
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dunderhi dunderhi is offline
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Location: MD
Join Date: Dec 2006
Posts: 6,866
Mein Auto: 15 M6 vert, 15 328dxt
Originally Posted by beamlord View Post
No offense but until you have a precise race-track timed 0-60 measurement, documented with a proper statistical sigma calculation, no sane person is buying the mobile-phone-on-the-fly-tacho measured 4.3 seconds. Keep in mind 60 mph on your tacho is around 55 real speed, too.

The latest Audi S8 which weighs 450lbs less, has more torque and hp and an awesome 8 speed tranny, and, well, overall a faster car by miles, does 4.2s. The new m5 which weighs substantialy less and is, duh, an m5, goes 4.4s. Your f01 can't be on the same level, period. I'm guessing realistically you have around 4.7 not less. By the way, stock f01 is stated as 5.1 and *not* 5, this is yet another wrong statement from you.

The results seen from Richards car seem actually very realistic and they are also correctly measured and can be trusted.

You don't get a linear increase of speed after a certain point, this is physics and not primitive math.
You are using some pretty conservative numbers. The Audi S8 has 20 more hp, but 100 less ftlbs torque than Dinan and it has been tested 0-60 in 4.0 seconds. The M5 has been tested at 3.6 seconds 0-60.

Since the F01 has been around for a few years, C&D has plenty of 0-60 test data:

4.3s - 2011 B7 (4710lbs)
4.3s - 2011 B7x (4886lbs)
4.4s - 2010 760Li (5150lbs)
4.5s - 2011 7AH (4807lbs)
5.1s - 2011 740i (4381lbs)
5.1s - 2010 750Lxi (4980lbs)
5.2s - 2009 750i (4760lbs)
5.2s - 2009 750Li (4475lbs)
5.3s - 2011 750Li (4602lbs)

Road & Track didn't do as many tests, but they were faster:

4.3s - 2011 B7 (4795lbs)
4.3s - 2011 760Li (5000lbs)
4.9s - 2010 750i (4600lbs)
4.9s - 2009 750Li (4735lbs)

Now none of these acceleration numbers are guarunteed for any particular car. There are a few of us over in the F10 forum that have taken our Dinan cars to the dragstrip and our results have varied quite a bit. Track run #2: 1/4 mile times w/ Stage III

I suspect if we had taken our cars to the track while they were still stock we still would have seen variations in results.

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