# Wrong Stats...

Discussion in '2000 BMW Z8' started by SL55 AMG, Oct 28, 2002.

1. #1
Its stated on the BMW official web site that the acceleration in this car from 0 to 100 km/h is in 4.7 sec not in 4.2 as posted here...

2. #2
Re: Wrong Stats...

XXX

3. #3
Re: Wrong Stats...

what?

4. #4
Re: Wrong Stats...

I have seen it posted under both times at different places, so I think this one is right.

5. #5
Re: Wrong Stats...

No its not wrong. you are saying 0 to 100 km and here its in mph not km so it will be liek that:

0 to 60 mph: 4.2 sec
62 mph = 100 km
0 to 62 mph: 4.7 sec

6. #6

Re: Wrong Stats...

nope.. those two extra 2 mph takes about 0.14 seconds..

Try it yourself:

4.2 / 60 = 0.07

0.07 * 2 = 0.14

4.2 + 0.14 = 4.34

Might wanna add a lil on that time, I always add 0.2 sec when I re-think acceleration times from mph to kph. Just to be sure I aint stating a faster time than the car really does.

0-100 kph = 4.4 sec ( if 0-60mph in 4.2 sec is correct )

This is EXACT, but it's near the real acceleration..

7. #7
Last edited by a moderator: Apr 25, 2016
8. #8
Re: Wrong Stats...

That's interesting math.
You've made a wrong assumption though,
YouÂve assumed that the power curve is parallel to the X-axis meaning that the car has X amount of power at 1000rpm and at 5000rpm etc. which it doesn't.
The lower the engine speed the less power it is producing hence the slower it will accelerate and as it passes peek power the power curve falls until you hit the redline and change gear.
The time of 0-62mph is in the high 4's and the time to 60mph should be ~4.2.
What your equation is saying that the time to 20mph should be half the time to 40mph and the time to 100mph should be double the time to 50mph, which you probably will know is wrong.

9. #9
Re: Wrong Stats...

AGHHH Sounds like a math lesson lol <A BORDER="0" HREF="http://www.supercars.net/emoticons.html"><IMG BORDER="0" SRC="http://speed.supercars.net/cboardhtml/emoticons/smile.gif"></A>

10. #10
Re: Wrong Stats...

I know that a car's acceleration isn't a linear function but COME ON!!
Those extra 2mph from 60-62 don't take half a second!

11. #11
Re: Wrong Stats...

That sounds a bit more realistic.

12. #12
Re: Wrong Stats...

Yes they are really wrong stats...0-60 4.2 secs...imposible its a 4.8 0-100 how can it be a dif of 0.7 secs. for only 2 or 4 miles per hour...

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