[....,,,,..,,..]

Originally Posted by Wills2

You're not going to get much more than 155-160mph out of a 330d on flat road it hasn't got the power to push through the air, an Alpina D3 will hit 171mph but needs 350hp to get there the B3 does 188mph and needs 410hp to just add 18mph more.

Last year driving an M3 to catch a flight from Frankfurt to Birmingham, we had an F31 330d behind us for a bit it was still there at around 150 - 160mph, admittedly I was not looking at the speedo a great deal.

(I know it was a 330d as it was originally in front lol).

As mentioned getting gains out of cars over certain speeds / bhp gets harder to achieve.

From Petes post I remember fitting new webbers or fitting new engine, came etc just to get over the magical 100mph, rebores, engine rebuilds etc where common, getting a Morris Marina TC over 100mph was an experience.

[Wills2]

Originally Posted by Brigand

Last year driving an M3 to catch a flight from Frankfurt to Birmingham, we had an F31 330d behind us for a bit it was still there at around 150 - 160mph, admittedly I was not looking at the speedo a great deal.

(I know it was a 330d as it was originally in front lol).

As mentioned getting gains out of cars over certain speeds / bhp gets harder to achieve.

Indeed but the 330d was at the edge of its performance envelope though, most cars are at those speeds the only car I've ever driven that would pull well above 150mph was my old M5 with 560hp, crazy to think it has another 300hp to punch through the air with compared to the 330d (which is a quick car in its own right) but it's only at those speeds you understand the difference the extra power makes.

I was on the autobahn a few weeks ago driving to Cologne in my M3 up to 140-150mph and the car feels strong but the acceleration tails off above 150mph.

I once wound up my old F10 520d to 140mph down hill but that took a bloody age sat there with my foot to the floor...come on!

[330Stevie]

we have a traffic officer in the immediate family. Her "company car" a 330d touring has gone well clear of 155 attending a priority run down the m4 ar 3.00am. They do not remove engine restrictions tho bizarrely.

[HighlandPete]

Originally Posted by 330Stevie

we have a traffic officer in the immediate family. Her "company car" a 330d touring has gone well clear of 155 attending a priority run down the m4 ar 3.00am. They do not remove engine restrictions tho bizarrely.

This is where we have to know the speedo calibration, etc.

A typical speedo calibration is on the plus side. Even a car with a limiter could indicate over 160mph, without a problem.

[HighlandPete]

Originally Posted by Brigand

..... getting a Morris Marina TC over 100mph was an experience.

Now there's a car that should have had a 70mph limiter, awful handling cars. Front suspension hardly moved on from a Morris 1000.: rolleyes:

[HighlandPete]

Originally Posted by Wills2

Indeed but the 330d was at the edge of its performance envelope though, most cars are at those speeds...

This is where the 35d engines score over the 30d. Often we read there isn't much difference in day to day driving between the two engines. That is near the truth in typical UK driving. Where the 35d really shows, is pulling at high speed, where as you say, the 330d will be on the edge of its envelope, the 35d will still be pulling strong.

[Wills2]

Originally Posted by HighlandPete

This is where the 35d engines score over the 30d. Often we read there isn't much difference in day to day driving between the two engines. That is near the truth in typical UK driving. Where the 35d really shows, is pulling at high speed, where as you say, the 330d will be on the edge of its envelope, the 35d will still be pulling strong.

It be interesting to see the differences, we have the delimited 350hp Alpina D3 with a top speed of 171mph where would the 258hp 30d and 313hp 35d be?

[NISFAN]

Originally Posted by HighlandPete

This is where the 35d engines score over the 30d. Often we read there isn't much difference in day to day driving between the two engines. That is near the truth in typical UK driving. Where the 35d really shows, is pulling at high speed, where as you say, the 330d will be on the edge of its envelope, the 35d will still be pulling strong.

You would be talking xDrive vs xDrive of course, an sDrive will have quite a few more spare horses to apply to cutting through the wind at that speed.

[NISFAN]

According to CarTest2000: 267Km/h or 166MPH.

[Watsey]

Originally Posted by NISFAN

You would be talking xDrive vs xDrive of course, an sDrive will have quite a few more spare horses to apply to cutting through the wind at that speed.

Would be interesting to know what the net available power is for each of these units once frictional losses of the 4WD system is taken into account. I imagine 330D + MPPK is very close to a 335xD in terms of outright performance, i.e vmax not 0-60 from a standing start.

335xD + decent map to 380bhp (Tengo) would open the gap again of course.

[Six cylinder Virgin]

151mph on the autobahn, effortless past 120mph and kept going... Very strange going past 100mph and not going 'Licence'!

[NISFAN]

Originally Posted by Watsey

Would be interesting to know what the net available power is for each of these units once frictional losses of the 4WD system is taken into account. I imagine 330D + MPPK is very close to a 335xD in terms of outright performance, i.e vmax not 0-60 from a standing start.

335xD + decent map to 380bhp (Tengo) would open the gap again of course.

Yes it would.

When Guy ran his 335d on the same rollers I did, there was 23hp difference at the wheels between a stock 335d and 330d sDrive.

That difference narrowed to 8hp after the PPK 330d.

The dyno would have been running around 70MPH, double the speed and the xDrive would need a few horses to drive that front diff.

Top speed calcs don't go by the power rules when it comes to diesels though, according to CarTest, top speed is achieved at below 4000RPM for both the 330d and 335d. At 3600RPM the 330d and 335d are producing very similar torque, it is only above that engine speed where the 335d starts to show the differences.

All academic anyway, who drives at VMAX???

[HighlandPete]

Originally Posted by NISFAN

You would be talking xDrive vs xDrive of course, an sDrive will have quite a few more spare horses to apply to cutting through the wind at that speed.

Preferably a setup with sDrive, using both engines, like 530d vs. 535d.

As you comment in a later post, xDrive will be using more power, particularly at higher speed.

[SteveChester]

Mine went to 160 on the HUD..

[Watsey]

Originally Posted by NISFAN

All academic anyway, who drives at VMAX???

Not many and not often, but this thread is about the theoretical, yes ?

[Tengocity]

I asked DMS to delimit it my car but not sure if they did actually. I'm not sure they did as the most I could get (on two separate occasions on the autobahn) was an indicated 163mph. That was when it was putting out 360bhp.

But as Pete mentioned (in regard to diff 330d v 335d), the biggest difference the remap has made is the ability to continue to pull hard well in to 3 figure speeds.

[HighlandPete]

Originally Posted by Watsey

Not many and not often, but this thread is about the theoretical, yes ?

Plus for me it is not just how fast a car can go. It is the ability to get to a speed quickly. Wringing out a couple of mph on the limit to prove a speed is possible is one thing, but to get near to a limited terminal speed and still accelerate near that limit is another thing altogether, IMO.

Same applies at lower speeds, virtually all cars can get to 80mph and beyond. But a car that accelerates hard to 80mph is in a different league, to the car that struggles to exceed 80mph, even if you never drive any faster.

For the higher speeds it is what power we have available to accelerate at say 150mph. If a car requires 240bhp to drive at 150mph, and we have 250bhp available, only 10bhp is available for further acceleration and a slightly higher terminal speed. A far different experience to the same car having 350bhp available, 240bhp to drive 150mph and 110bhp to accelerate the extra 5mph to the limiter.

[Dandanbmw]

When I tried my 640d out while abroad it hit 160mph easily and was still pulling. It's running around 370bhp. It certainly felt it had 180-185 in it but take the inaccuracy of the speedo it's probably more like 175 I'd say.

[Lorcan]

Originally Posted by NISFAN

All academic anyway, who drives at VMAX???

I've maxed out various bikes on the 2 mile runway at RAF Woodbridge. Never tried it in the car but they need a lot more room, and there isn't anywhere longer in the UK (legally). Many car owners have turned up to these events with "fast" cars and gone away with their tails between their legs...

[x DR Vodka x]

This should help ....goes through all the models up to M3

https://youtu.be/3z-E0YbVy4Q

The M3 at the end is pushing 190mph !!!

[NISFAN]

Originally Posted by x DR Vodka x

This should help ....goes through all the models up to M3

The M3 at the end is pushing 190mph !!!

Ha and only a hand full of mph faster than a 335d? Hmmmmm

[JOHNBMWM5]

Originally Posted by NISFAN

Yes it would.

When Guy ran his 335d on the same rollers I did, there was 23hp difference at the wheels between a stock 335d and 330d sDrive.

That difference narrowed to 8hp after the PPK 330d.

The dyno would have been running around 70MPH, double the speed and the xDrive would need a few horses to drive that front diff.

Top speed calcs don't go by the power rules when it comes to diesels though, according to CarTest, top speed is achieved at below 4000RPM for both the 330d and 335d. At 3600RPM the 330d and 335d are producing very similar torque, it is only above that engine speed where the 335d starts to show the differences.

All academic anyway, who drives at VMAX???

Funny I drove a 5 series 530D M Sport back to back with the 535D M Sport and there was a huge difference in performance, the 535D wiped the floor with the 530D.