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Andy K

Joined: 15-May-2004
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Points: 874 		Direct Link To This Post Topic: sport vs standard
    Posted: 29-July-2004 at 13:32
hi all i read in an old post that a 525 sport 24v as a 1.1 secs faster 0-60 than a standard 525 24v does anyone know what the difference is between a 535 sport and a standard 535 as far as i know only the g/box and diff is different on the 525 sport to improve take off as it is on the 535 sport  .
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Points: 1344 		Direct Link To This Post Posted: 29-July-2004 at 13:45
Just found this comparison :

"What Car" Mar. 90 figures for 535i SPORT (manual)

mpg: 22.2
211 bhp @ 5,700 rpm
225 lbft @ 4,000 rpm
0 - 60 mph 7.3 secs
0 - 100 mph 19.3

"Autocar" Mar. 88 figures for 535i SE (manual)

mpg 22.3
bhp / torque same
0 - 60 mph 7.4 secs
0 - 100 mph 19.8


Miles

1991 525i Sport Manual


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Andy K

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Points: 874 		Direct Link To This Post Posted: 29-July-2004 at 14:11

hi miles if only 0.1 between the two and a belive that to be true. how does a 2.5 sport with the same bmw mods  as a 535 sport  over an se have a 1.1 faster time that would make a 525 sport as quick as a 535 with 19 more bhp an close to 1000 more cc i have read by R.M.CLARKE that a 525sport has

189bhp@5900rpm

torque 181 lb-ft@4700

0-60mph=8.5/se=8.6

if as you say a 525 sport as a 0-60 time of 7.4 and i can not find  that figure quoted in any of my books/mags  it would put a 525i sport on par with a 535 sei and only 0.1 sec behind a 535i sport and also only 1 second  behind a 3.6 m5 and i must say i find that a bit hard to belive as i know on the road a 2.5 sport does not keep up with 3.5sport like wise my 3.5 is no match for a 3.6 m5

  



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Points: 1344 		Direct Link To This Post Posted: 29-July-2004 at 16:10
My owners manual says that the 24v 525 is 192Bhp and 181 lb.ft...The 535 is 211Bhp and 225lb.ft

0-62 times for manual 525Se and 535se are 8.6sec and 7.7sec

It also says that the 535 is heavier than the 525

I didn't say that the figures i gave in my original post were accurate they were taken from a 525 sport owners webpage ?????

I would imagine that with my performance chip (with claimed gains of 20Bhp and 15nM) my car should be quicker than a 535 ?

Having owned a 3.8 M5 i can say that the 525 definitely seems to pick up better at lower revs, the M5's power didn't really kick in until around 4000Rpm. But it was obviously still quicker with 340Bhp


Miles

1991 525i Sport Manual


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Andy K

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Points: 874 		Direct Link To This Post Posted: 29-July-2004 at 16:40

hi miles i am talking about standard cars  you say you feel your 525 will out perform a 535 although i think that doubtful dont forget a 535 can be chipped also. As mine is   Big Smile

as for being heavier the curb weight of a 525 is approx 3485

                                                                  535 is approx 3533

not really a lot in it.

but getting back to my Q,BMW tell me that in real terms there is no performance advantage between any BMW badged se/sport with equal cc



Edited by b8alk
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Points: 6484 		Direct Link To This Post Posted: 29-July-2004 at 17:01
I thought the performance figures for the 525se and 525sport were the same. If there is a difference it could be because the SE figures refer to an auto box and the sport a manual. If someone is claiming that a 525 sport manual is 1.1 seconds faster to 60 than an SE manual then I don't believe them! 
Entering an age of Austerity and now driving a Focus Diesel.
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Points: 1344 		Direct Link To This Post Posted: 29-July-2004 at 17:10
Mmmmmmm why has the sport got a different gearbox and differential then ? With different ratios ? The 525 Sport i currently own is much quicker than the Manual 525Se i used to own, the gears are a lot shorter and it tops out at around 125mph (you run out of revs) whereas the 525se would go on to about 140.

I know that there is no difference in performance with the automatic models of 525se and 525sport.


Miles

1991 525i Sport Manual


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Points: 147 		Direct Link To This Post Posted: 29-July-2004 at 17:16
miles, could have a different gearbox to the original?  maybe from something slower like a 520?  gear ratios would be different i guess.
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Andy K

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Points: 874 		Direct Link To This Post Posted: 29-July-2004 at 17:18
bmw quotes the 5th gear for a sport is a direct 1.00:1 and a final drive ratio of 3.23:1 which is the same as all 525 24v,s i checked
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Points: 1344 		Direct Link To This Post Posted: 29-July-2004 at 17:21
It's a possibility i suppose ? But other 525 sport owners have commented on how short 1st and 2nd gear are ?

Andy where are you getting your information from ?


Miles

1991 525i Sport Manual


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Andy K

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Points: 874 		Direct Link To This Post Posted: 29-July-2004 at 17:27
hi miles i have library of BMW books/mag but i have a good friend who works for hartge in germany who i have been on the phone with today as this has intreged me.

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Points: 1344 		Direct Link To This Post Posted: 29-July-2004 at 17:29
Ok fair enough, but why do the gears seem much shorter ? Are there any other 525 Sport owners that have driven a standard 525 Manual or vice versa who would like to comment ?



Miles

1991 525i Sport Manual


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Andy K

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Points: 874 		Direct Link To This Post Posted: 29-July-2004 at 17:37
1st and poss 2nd may well be but even if that is the case and i do not think it is, top speed of your car would still be the same as any other 525 not 20ish mph slower if your sport can only reach 125mph chip or no chip its not up par some thing some were is wrong...
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Points: 1344 		Direct Link To This Post Posted: 29-July-2004 at 17:42
I would hit the rev limiter if i tried to go much more than 125 ?????



Miles

1991 525i Sport Manual


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Andy K

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Points: 874 		Direct Link To This Post Posted: 29-July-2004 at 17:57

hi again miles i have just had my frend run a check on what your car shoud run as it left bmw hope this is some help to you.

this is what he sent me back..

gear          ratio          overall ratio          rpm  mph

1st          4.23:1          13.66:1          6250       34

2nd          2.52:1         8.14:1             6250       58

3rd          1.67:1           5.39:1            6250        88

4th          1.22:1          3.94:1             6250       120

5th           1.00:1         3.23:1         est 5500     128

final drive ratio:3.23:1

horsepower (sae):189bhp@5900

torque  181 lb-ft @4700

max engine speed =6250

0-30mph=2.9

0-40mph=4.5

0-50mph=6.2

0-62mph=8.6

0-70mph=11.1

0-80mph=14.1

0-90mph=17.9

quater mile run=16.8@87 mph

 

 

hope this is some use to you.



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Points: 1344 		Direct Link To This Post Posted: 29-July-2004 at 18:46
Perhaps someone has put a different gearbox or differential in my car then as there is no way i would be doing 128 in 5th gear at 5500 RPM ? Although i have no record of the gearbox or differential being changed (i have full BMW service history with all receipts since new)


Miles



Edited by e34m5

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Andy K

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Points: 874 		Direct Link To This Post Posted: 29-July-2004 at 19:03
sorry that did not help hopefully somebody with a 525 sport might be able to honestly swop notes with you
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Points: 1344 		Direct Link To This Post Posted: 29-July-2004 at 19:29
I would be very interested to hear from other 525 Sport owners as you have got me wondering if someone has changed something on my car


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Points: 128 		Direct Link To This Post Posted: 29-July-2004 at 21:53

Hi,

I have had my car at 130mph, it got there quickly and felt like it had lots more to go. 

 



1992 525I Sport, Bilstein Sport Suspension. Viper 2 Chip
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Points: 8 		Direct Link To This Post Posted: 31-July-2004 at 06:39
hi                                                                                                                              i use to have a 1990 525i se 24v it had no problem getting up to 135mph and still felt it could go a bit more and that was with no mods, it use to fly just never had the road to push it to the limit  or(the balls lol)
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