Performance Diesels

Dandle said:
How do you think the 535d is quicker than the 535i these days with less book BHP. It has a much more torque spread over its rev range which equates to a much higher average BHP.
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I'd be interested to see the power graphs of both cars :)

Not having a go, I'd genuinelly be interested to see.
 
Thats the one that caught my eye Cannot justify 28k on a 3 year old car though , specially after spending 18k on my ibiza 6 months ago , although id get 16k nearly for it if i was to sell
 
[TW]Fox;17732372 said:
My mistake, there is a £40 difference or so in tax. On a £20-40k car. lol



See above - the 335i is rather more than its book figures. At least the yank ones are, nobody over here seems to own a 335i so they are rarely discussed :(

Besides, if we are discussing book figures, direct from my 2008 E92 brochure:

335i 0-60 5.5 seconds (5.7 automatic)
330i 0-60 6.0 seconds (6.2 automatic)
335d 0-60 (6.1 automatic)

But we all know how 0-60 isn't the greatest indicator of performance. Either way, the 335i is quicker, the 335d is more economical.
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Well as your so bloody picky all the time I thought maybe it was worth correcting your "knowledge"... ;)


The states I put up are taken from the BMW website from the tech comparison as I don't have any brochures to go from and seemed the logical place to get the details for the ED cars, but then they are very close on all the cars as I've said all along.
 
[TW]Fox;17732478 said:
You have to be kidding? That's a ruined chavtastic autovogue thing, its terrible.
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I thought it looked quite nice, Im not sure whats Chavtastic about it? :p

Edit - Nevermind, I see the front at least isn't standard, I didn't really spot that before :(

I think those wheels look alright though and the black is nice.
 
Dandle said:
Thats one of the bugbears on this forum about torque but isn't totally true that it has no meaning. Lots of torque low and low revs will still give you good BHP at the flywheel.
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And what do you suppose happens to all that lovely flywheel torque when it goes through the tall gearing required to propel the car at reasonable speeds at such low engine RPM? It comes out the same as a higher revving, lower torque engine producing the same power.

Engine torque is not the important factor; as has often been stated it's what you get at the wheels. Providing the engine is well matched to the transmission, and you aren't one of these people who apparently are unable to change gear when needed then the diesel torque advantage is negligible.
 
[TW]Fox;17732386 said:
I'd be interested to see the power graphs of both cars :)

Not having a go, I'd genuinelly be interested to see.
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No power graph but just some figures for the new ones:

535i

Max output (kW/hp/rpm) - 225/306/5800
Max torque (Nm/rpm) - 400/1200-5000
Acceleration 0-62 mph (sec) - 6.0 (6.1)
Acceleration 50-75 mph in 4th (sec) - 5.9
Combined (mpg) - 33.2 (33.6)

535d (auto only)

Max output (kW/hp/rpm) - 220/299/4400
Max torque (Nm/rpm) - 600/1750
Acceleration 0-62 mph (sec) - (5.7)
Acceleration 50-75 mph in 4th (sec) - (-)
Combined (mpg) - (46.3)

Now that is performance.
 
Dogbreath said:
And what do you suppose happens to all that lovely flywheel torque when it goes through the tall gearing required to propel the car at reasonable speeds at such low engine RPM? It comes out the same as a higher revving, lower torque engine producing the same power.

Engine torque is not the important factor; as has often been stated it's what you get at the wheels. Providing the engine is well matched to the transmission, and you aren't one of these people who apparently are unable to change gear when needed then the diesel torque advantage is negligible.
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Look at the figures for the 535i and d and as above the 353 I and d it's not the max BHP giving that higher performance it's the higher torque against the RPM which is giving a larger average flywheel BHP across the available rev range. I can't comment on the ratios of these new cars bit the older BMW ds and Is shared the same gearbox ratios with a slightly different final drive.
 
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