Must be 98RON minimum. Same as all petrol BMW'S.

 

Must be 98RON minimum. Same as all petrol BMW'S.

Even in my 114i?

 

Must be 98RON minimum. Same as all petrol BMW'S.

Even in my 114i?

Yes all petrol BMW'S are the same, although proptionatley less effect on the less powerful engines. 95ron will work fine, just slightly less power.

 

Shell v power imo, bp ultimate or tesco premium if you like but shell v power is recommend for m cars but in the real world there is little seprating them. The internet is full of into om the subject matter but if your driving an m2 premium fuel is a must really.

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Must be 98RON minimum. Same as all petrol BMW'S.

Must is too strong a word, any petrol BMW can run on std 95RON and it will not cause any problems.

On more powerful cars (M2/240/140 etc) it is possibly beneficial to use 98/99 ron to achieve max power, but again it is not essential or a MUST by any stretch!

And your average man won't notice the difference either between the two.

 

Must be 98RON minimum. Same as all petrol BMW'S.

Must is too strong a word, any petrol BMW can run on std 95RON and it will not cause any problems.

On more powerful cars (M2/240/140 etc) it is possibly beneficial to use 98/99 ron to achieve max power, but again it is not essential or a MUST by any stretch!

And your average man won't notice the difference either between the two.

My apologies, I didn't articulate it very well.

For the last thirty years or so, BMW have always caveated their performance, power and economy figures, stating they use 98RON.
Yes, 95RON is fine, but you will lose a little of each.
As far as an M car is concerned, I cannot see the logic of putting anything other than the very best fuel in it.

 

True dat

I use Tesco 99 in my 240.

 

Any engine that uses forced induction I would recommend using premium fuel

(I used to test prototype engines for Ford so I have a little experience in this)

 

Higher octane enable and electronically controlled engine to run more advanced ignition etc to optimises performance and efficiency.Shell and BP balance higher octane with detergent additives, not sure about Tesco 99 in this respect.

Though most BMWs including the higher output ones can run on fuel as low as 89 octane, remember a 2.0 4cyl 328i/330i at 250bhp is in as high a state of tune as a 3.0 370 bhp M2 and not many people driving those will worry about premium fuel.

 

Higher octane enable and electronically controlled engine to run more advanced ignition etc to optimises performance and efficiency.Shell and BP balance higher octane with detergent additives, not sure about Tesco 99 in this respect.

Though most BMWs including the higher output ones can run on fuel as low as 89 octane, remember a 2.0 4cyl 328i/330i at 250bhp is in as high a state of tune as a 3.0 370 bhp M2 and not many people driving those will worry about premium fuel.

I'm not sure that's correct. I think you'll find the lowest UK octane rating for BMW is 95RON

 

Yes the lowest UK is 95, but I think 50pence is saying they could run as low as 89 if it was available.

Some countries have really low RON fuel.

 

I use Tesco Momentum in both the M2 and Golf Gti I have.

 

Yes the lowest UK is 95, but I think 50pence is saying they could run as low as 89 if it was available.

Some countries have really low RON fuel.

Yes, that's the point, 95 RON is actually pretty decent, in many countries including the US much lower octane fuel is available and as far as I know most BMWs will run on fuel as low as 89 RON, the electronics retard the ignition etc, efficiency and performance are reduced.

However I almost always run my M135i on BP Ultimate or Shell V-Power as the higher octane will enable the engine performance to be optimised.

 

Yes the lowest UK is 95, but I think 50pence is saying they could run as low as 89 if it was available.

Some countries have really low RON fuel.

Yes, that's the point, 95 RON is actually pretty decent, in many countries including the US much lower octane fuel is available and as far as I know most BMWs will run on fuel as low as 89 RON, the electronics retard the ignition etc, efficiency and performance are reduced.

However I almost always run my M135i on BP Ultimate or Shell V-Power as the higher octane will enable the engine performance to be optimised.

I think I'm correct in saying the US uses a different measure that the UK RON. So not directly comparable. But yes, for the UK 95 is the lowest

 

Must be 98RON minimum. Same as all petrol BMW'S.

Must is too strong a word, any petrol BMW can run on std 95RON and it will not cause any problems.

On more powerful cars (M2/240/140 etc) it is possibly beneficial to use 98/99 ron to achieve max power, but again it is not essential or a MUST by any stretch!

And your average man won't notice the difference either between the two.

My apologies, I didn't articulate it very well.

For the last thirty years or so, BMW have always caveated their performance, power and economy figures, stating they use 98RON.
Yes, 95RON is fine, but you will lose a little of each.
As far as an M car is concerned, I cannot see the logic of putting anything other than the very best fuel in it.

Where is your evidence? The M240i booklet only states a 95RON minimum, no mention of recommended or suggested other types.

If it is mapped for 98RON then 95RON would cause a lose of power, if it is mapped for 95RON then its just a waste of money mostly.

 

Yes the lowest UK is 95, but I think 50pence is saying they could run as low as 89 if it was available.

Some countries have really low RON fuel.

Yes, that's the point, 95 RON is actually pretty decent, in many countries including the US much lower octane fuel is available and as far as I know most BMWs will run on fuel as low as 89 RON, the electronics retard the ignition etc, efficiency and performance are reduced.

However I almost always run my M135i on BP Ultimate or Shell V-Power as the higher octane will enable the engine performance to be optimised.

I think I'm correct in saying the US uses a different measure that the UK RON. So not directly comparable. But yes, for the UK 95 is the lowest

Actually I think you are right, the US was not the best example ...

 

If it is mapped for 98RON then 95RON would cause a lose of power, if it is mapped for 95RON then its just a waste of money mostly.

There are various aspects of the combustion process affected by the octane rating, it can influence ignition timing, boost pressure etc. For instance for many years now cars and motorcycles have used anti-knock sensors to optimise the ignition timing, in simple terms the ECU will advance the ignition until knock (pinking/pre-ignition) is detected and then back it off slightly, this happens per cylinder many times a second.

Therefore even if an engine is quoted as being able to run on, say, 95 RON fuel it is still likely to benefit from a -higher octane fuel.

 

Yes the lowest UK is 95, but I think 50pence is saying they could run as low as 89 if it was available.

Some countries have really low RON fuel.

Yes, that's the point, 95 RON is actually pretty decent, in many countries including the US much lower octane fuel is available and as far as I know most BMWs will run on fuel as low as 89 RON, the electronics retard the ignition etc, efficiency and performance are reduced.

However I almost always run my M135i on BP Ultimate or Shell V-Power as the higher octane will enable the engine performance to be optimised.

I think I'm correct in saying the US uses a different measure that the UK RON. So not directly comparable. But yes, for the UK 95 is the lowest

The US states the octane in MON whilst we are RON.

 

If it is mapped for 98RON then 95RON would cause a lose of power, if it is mapped for 95RON then its just a waste of money mostly.

There are various aspects of the combustion process affected by the octane rating, it can influence ignition timing, boost pressure etc. For instance for many years now cars and motorcycles have used anti-knock sensors to optimise the ignition timing, in simple terms the ECU will advance the ignition until knock (pinking/pre-ignition) is detected and then back it off slightly, this happens per cylinder many times a second.

Therefore even if an engine is quoted as being able to run on, say, 95 RON fuel it is still likely to benefit from a -higher octane fuel.

Granted, but the point above of "BMW have always caveated their performance, power and economy figures, stating they use 98RON" - I cant see evidence of - as it would state it in the owners manual surely?!

 

If it is mapped for 98RON then 95RON would cause a lose of power, if it is mapped for 95RON then its just a waste of money mostly.

There are various aspects of the combustion process affected by the octane rating, it can influence ignition timing, boost pressure etc. For instance for many years now cars and motorcycles have used anti-knock sensors to optimise the ignition timing, in simple terms the ECU will advance the ignition until knock (pinking/pre-ignition) is detected and then back it off slightly, this happens per cylinder many times a second.

Therefore even if an engine is quoted as being able to run on, say, 95 RON fuel it is still likely to benefit from a -higher octane fuel.

Granted, but the point above of "BMW have always caveated their performance, power and economy figures, stating they use 98RON" - I cant see evidence of - as it would state it in the owners manual surely?!

They've quoted this with their engine spec for the thirty years I've been around BMWs. It's on the website somewhere.

 

If i remember correctly, Fifth Gear did a test on it some years back.
Shell did well - but BP Ultimate was worse than the supermarket stuff IIRC.

 

Here it is...

https://youtu.be/WTaBngvsPrc

 

Must is too strong a word, any petrol BMW can run on std 95RON and it will not cause any problems.

On more powerful cars (M2/240/140 etc) it is possibly beneficial to use 98/99 ron to achieve max power, but again it is not essential or a MUST by any stretch!

And your average man won't notice the difference either between the two.

My apologies, I didn't articulate it very well.

For the last thirty years or so, BMW have always caveated their performance, power and economy figures, stating they use 98RON.
Yes, 95RON is fine, but you will lose a little of each.
As far as an M car is concerned, I cannot see the logic of putting anything other than the very best fuel in it.

Where is your evidence? The M240i booklet only states a 95RON minimum, no mention of recommended or suggested other types.

If it is mapped for 98RON then 95RON would cause a lose of power, if it is mapped for 95RON then its just a waste of money mostly.

It's mapped for 98RON.

On 95RON the ignition is backed off.

 

My apologies, I didn't articulate it very well.

For the last thirty years or so, BMW have always caveated their performance, power and economy figures, stating they use 98RON.
Yes, 95RON is fine, but you will lose a little of each.
As far as an M car is concerned, I cannot see the logic of putting anything other than the very best fuel in it.

Where is your evidence? The M240i booklet only states a 95RON minimum, no mention of recommended or suggested other types.

If it is mapped for 98RON then 95RON would cause a lose of power, if it is mapped for 95RON then its just a waste of money mostly.

It's mapped for 98RON.

On 95RON the ignition is backed off.

But for fear of repeating myself.. the manual does not tell you to use it.

When I had an Impreza it explicitly said 98RON min - not 95

 

Where is your evidence? The M240i booklet only states a 95RON minimum, no mention of recommended or suggested other types.

If it is mapped for 98RON then 95RON would cause a lose of power, if it is mapped for 95RON then its just a waste of money mostly.

It's mapped for 98RON.

On 95RON the ignition is backed off.

But for fear of repeating myself.. the manual does not tell you to use it.

When I had an Impreza it explicitly said 98RON min - not 95

Indeed. The manual merely says use a minimum of 95ron.