The cover article of the August 2002 issue of Roundel is about Dinan. The main article covers a S3 540 and a S2 M5. It's Dinan's red test car with all the goodies.
It's nice because it gives all the stats! On a S2 M5 the stats are:
Weight: 3965
HP: 470
TQ: 419
Top speed: 191
0-60: 4.6
1/4: 12.9
This is the first time I've seen published 0-60, top speed, and 1/4 mile times for the S2 M5.
It would be interesting to see the same stats for a stock car driven by the same driver under the same conditions. Basically, I'm not that impressed by these numbers and suspect that the driver wasn't that agressive with the car. We've seen similar numbers for stock cars at the drag strip. An 18% increase in HP should account for more than .1 off the 0-60 times unless the car is so constrained by the tire grip -- in which case better tires would greatly help a stock car.
I think this month's issue was great. Very enjoyable issue! All the Dinan info was very informative.
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Manny A (Morristown BMW, NJ)
2000 Carbon Black/Full Caramel
Stoptech Big brake kit(Zeckhausen)
Powerchip Gold 93
Active Autowerkes CAI
Full Supersprint Exhaust w/X pipe
Evosport Diff 3.45 40% Lock up
Autosolutions SSK
KW Coilovers Varient 3
BBS LM w/SO3 and 285 out back
Alot more mods, but can't list all.
0-60 time (or just about any time from rest) is a very poor measure of performance on a powerful car -- in-gear acceleration reflects power to the ground and real-world performance
For normal conditions, these are horrible numbers. This worries me. This is alarming. Stock M5s do these numbers. What gives? I need to see better numbers than that before I begin any mods.
It seems to me that no matter what you do to an M5 engine its 0-60 and quarter mile numbers are going to suck. IMHO this is becuase the M5 has 4000lbs of bulk and a 300HP clutch - not a good combo. Numbers that don't have a heavy reliance on good clutch hookup - 30MPH-to-anything, butt dyno feeling, 0-to-150MPH for example - are going to look stellar with an engine upgrade
300HP clutch? I hear somewhere that the M3 SMGII is good for 380HP? Also, why would BMW use a 300HP clutch for a car that's capable of well beyond that number? Just some questions, I am not sure about what the optimal clutch <-> HP numbers are. Thanks.
Quote:
Originally posted by rvacha It seems to me that no matter what you do to an M5 engine its 0-60 and quarter mile numbers are going to suck. IMHO this is becuase the M5 has 4000lbs of bulk and a 300HP clutch - not a good combo. Numbers that don't have a heavy reliance on good clutch hookup - 30MPH-to-anything, butt dyno feeling, 0-to-150MPH for example - are going to look stellar with an engine upgrade
I want a clutch!!!
__________________ Kevin 2002 E46/// M3 Carbon Black / Grey
Help me understand what the clutch has to do with not being able to do a respectable 0-60 time (respectable being 4.1-4.3). I think hooking up seems to be the problem with obtaining these numbers. If you had a clutch that could handle 450+ HP and you dumped it, it seems that you would just spin.
I also think the real problem is weight. It doesn't seem like there is a whole lot you can do there. What make the M5 is the performance + luxery, if you stripped it down it wouldn't be a M5 anymore.
I'm starting to get convinced that the M5 is the wrong car to make super fast, as far as 0-60 and 1/4 mile times are concerned. However, having a car that does well on the autobauhn or other situations where you are already moving seems to be where the opportunity is with the M5.
Is it only me? Am I the only one giving up on trying to make the car super fast?
Kevin
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