[NFS]

Originally Posted by dxb335d

Mine pulls off the clock. 330i will pull off thr clock too.

Out of interest the old 218hp 530d would top out at 156 mph. As a result it was not limited. Making it (technically) the fastest production BMW

[NFS]

Originally Posted by dxb335d

Actually power plays a big part, gearing is just obvious. Without correct gearing the top speed cant be ahcieved.

You still need big HP to pull the high speed to overcome air resistance.

What I'm trying to say is that gearing, rpm and tyre profiles dictate a theoretical maximum speed. Engine power and air resistance determine how close a car comes to achieving that.

[dxb335d]

Originally Posted by NFS

What I'm trying to say is that gearing, rpm and tyre profiles dictate a theoretical maximum speed. Engine power and air resistance determine how close a car comes to achieving that.

Yeah I agree.

[NFS]

Originally Posted by dxb335d

Yeah I agree.

So in theory the 330i could run up to 190mph, but I think it would run out of steam very close to 170mph.

The 335i could run up to 194mph, but I reckon it would actually top out at a little over 180mph.

[dxb335d]

Originally Posted by NFS

So in theory the 330i could run up to 190mph, but I think it would run out of steam very close to 170mph.

The 335i could run up to 194mph, but I reckon it would actually top out at a little over 180mph.

I dont think a 330i will go anywhere near 170mph.

A 350HP 335d can only pull to 175mph.

Standard 335i i dont think would pull 180.

[NFS]

Originally Posted by dxb335d

I dont think a 330i will go anywhere near 170mph.

A 350HP 335d can only pull to 175mph.

Standard 335i i dont think would pull 180.

I was only guessing at numbers and I think you are probably right.

Looking at it logically:

320i does 142mph with 170hp
325i hits limiter with the same 218hp output as the 530d - which we know actually maxed at 156mph.
330i has 272hp
335i has 306hp

So the 14mph change from 142-156 needs an extra 48hp.

I've just done a little spreadsheet factoring in air resistance as the square of speed to see how that 48hp would be split up. In theory, 142-143 would need 0.047hp, but 155-156 would need 9hp.
If you extend that to the higher speeds you get the following:

272 hp 330i = just over 160 mph

306 hp 335i = just over 162 mph

Sort of makes sense that way, but I've read lots of posts where people claim to have gone faster than that.

Also .. that would only get you 165mph for 350hp

[Swiller]

Originally Posted by dxb335d

I dont think a 330i will go anywhere near 170mph.

Early 160s i reckon. not a million miles away..

[dxb335d]

Originally Posted by Swiller

Early 160s i reckon. not a million miles away..

That car struggled to get to 156mph.

[Swiller]

with 400+ rpm left, what is your opinion on the top speed then o great one?

[dxb335d]

Originally Posted by Swiller

with 400+ rpm left, what is your opinion on the top speed then o great one?

Forget how many revs are left mate, Revs left is nothing. It still needs POWER to pull to that revs.

A 330i will close in on 160 im quite sure.

Mine is only doing 4100 at an indicated 162-163 (off the clock). Ive got a good 900rpm. It would never pull to that without major major HP.

[MIKEYBMW1]

Originally Posted by SiKkBaSs

Which motorway did you use then Mikey boy??

A private one

[NFS]

OK .. having looked at the numbers a bit .. this is what I reckon:

272 hp (330i) = 163mph

306 hp (335i) = 169mph

350 hp = 177mph

[dxb335d]

Originally Posted by NFS

OK .. having looked at the numbers a bit .. this is what I reckon:

272 hp (330i) = 163mph

306 hp (335i) = 169mph

350 hp = 177mph

TBH i dont think your far out there mate at all. Nice calcs.

[beemerbird]

Simon, you've got too much time on your hands and where are the pics. of this new car of yours........yes, wash it first please.

So what potentially will my car do delimited then?

[rabble]

Originally Posted by Swiller

Early 160s i reckon. not a million miles away..

That 330i is only 14hp less than mine yet mine got to 155 alot faster.

NFS nice calcs, and your prob right.

If a remap gave my car any decent upgrade (which it doesnt), i would get it and delimit it same time then i couldve found out for sure because although NFS predictions seem very true, the car didnt struggle at all and seemed to have plenty more to go.

[dxb335d]

Originally Posted by beemerbird

Simon, you've got too much time on your hands and where are the pics. of this new car of yours........yes, wash it first please.

So what potentially will my car do delimited then?

Yours has approx 250-260HP at the wheels, I rekon it would pull 165.

Your turbo would touch 200 eh

[NFS]

Originally Posted by beemerbird

Simon, you've got too much time on your hands and where are the pics. of this new car of yours........yes, wash it first please.

So what potentially will my car do delimited then?

Too much time ... but not bored enough to wash it yet

The 2.0FSI has 180PS and will do 148mph

Extrapolating from there .. the S5 has 354ps, which I reckon makes it good for around 179 mph.

[dxb335d]

Originally Posted by NFS

Too much time ... but not bored enough to wash it yet

The 2.0FSI has 180PS and will do 148mph

Extrapolating from there .. the S5 has 354ps, which I reckon makes it good for around 179 mph.

Is that a FWD or 4WD 2.0 ?

354HP but 4wd. it has Less HP at the wheels than a Re-mappped 335d.

but thinking about it a little more, I rekon it will do 165+

[NFS]

Originally Posted by dxb335d

Is that a FWD or 4WD 2.0 ?

354HP but 4wd. it has Less HP at the wheels than a Re-mappped 335d.

but thinking about it a little more, I rekon it will do 165+

Good point ... the 211 ps FSI with quattro 4wd only does 150mph

Based on that the S5 would drop to 169mph

[rabble]

Originally Posted by NFS

Good point ... the 211 ps FSI with quattro 4wd only does 150mph

Based on that the S5 would drop to 169mph

hmm i think the s5 would do more than that. people on TT forums have done around 170mph on the TTS and although its a light car, i think the s5 should be more powerful than that.

TTS doing 304kph

Damn, i def want this guys mods on my tts. 189mph from a 2.0litre engine is crazy (bare in mind, 'real' gps speed would be little lower)

[a1reader]

I thought the Veyron was electronically limited to 253MPH??

[richd]

Originally Posted by NFS

OK .. having looked at the numbers a bit .. this is what I reckon:

272 hp (330i) = 163mph

306 hp (335i) = 169mph

350 hp = 177mph

The problem is those last few mph take forever. I had a Z4MC previously, which I took over to Germany.

Given it has 343bhp, I was able to see 170 leptons on the speedo, but only 161 leptons on the GPS (i.e. true speed). The speed increase from 155 to 161 was very gradual, and given another few miles I am sure it would have crept up to 165mph. Interestingly, at no time did I hit a speed limiter.

I think realistically, you'd struggle to get a true 163 out of a 330i. Also, all these You Tube clips of speedo's, most over read by a good 10mph plus at those sort of speeds, they just can't be trusted to give an accurate reading.