[tuco44]

Originally Posted by FastF30

In the end... they both put out the same power tuned... reliability goes to N55 .. that's alllllll that matters...

Can you post proof of that claim, as I don't think it is accurate?

There have been few B58 problems so far, since 2016 intro in the 3 Series.

There have been many more N55 problems, although there are many more N55s out there.

[FastF30]

Originally Posted by tuco44

Can you post proof of that claim, as I don't think it is accurate?

There have been few B58 problems so far, since 2016 intro in the 3 Series.

There have been many more N55 problems, although there are many more N55s out there.

Early years e90's... that's why I said early b58... sorry don't have major time to research for proof right now but I'm sure it's out there... better yet prove me wrong...

Now the new G20 I'm very very interested in that motor... but if the new M3 goes AWD... I'm getting that no matter what..

[FastF30]

This article was one of the factors that made me go with the 335i instead of the 340i.... after I read it I went and test drove and have to agree...

It won't let me link it...

blogdotmod bargainsdotcom/best-mods-for-bmw-340i-f30-lci-with-b58-engines/

delete the space and add the dots...

[tuco44]

Originally Posted by FastF30

This article was one of the factors that made me go with the 335i instead of the 340i.... after I read it I went and test drove and have to agree...

It won't let me link it...

blogdotmod bargainsdotcom/best-mods-for-bmw-340i-f30-lci-with-b58-engines/

delete the space and add the dots...

I actually did that work to read that now almost 2 year old article, and it does not in any way speak to your claim that the N55 is more reliable. It does speak to, at least as of 2 years ago, some of the difficulty in modding the B58 - at THAT time. The "modibility" has improved since then.

Regardless, there is nothing there to support your claim of the N55 being more reliable.

As I thought would be the case.

[FastF30]

Originally Posted by tuco44

I actually did that work to read that now almost 2 year old article, and it does not in any way speak to your claim that the N55 is more reliable. It does speak to, at least as of 2 years ago, some of the difficulty in modding the B58 - at THAT time. The "modibility" has improved since then.

Regardless, there is nothing there to support your claim of the N55 being more reliable.

As I thought would be the case.

I thought it was obvious I wasn't talking about reliability but I'll point it out for you that I was specifically talking about the handling and one reason the N55 over the B58... If you check the reliability surveys for those years 2014-2017 you'll see 2014-2015 stands out as better years...I think it broke it down to categories ... when I find it again I'll post it...

In the end I'm happy your happy what ever the reasons are..

[tuco44]

Originally Posted by FastF30

In the end... they both put out the same power tuned... reliability goes to N55 .. that's alllllll that matters...

You are "not talking about reliability"..................??? Your words above.

Could have fooled me....whatever, pointless discussion.

[FastF30]

Originally Posted by tuco44

You are "not talking about reliability"..................??? Your words above.

Could have fooled me....whatever, pointless discussion.

That's just one point... I was also pointing out that the 340i handles worse than a 335i ... that's all .... That's why i didn't ref any of your other threads when I posted that... it was just another reason why the 335i is more awesome than the 340i... lol... I'll find you the data...

[Brett530]

My personal experience with my 2012 F30 335 and my 2017 340, both with dynamic handling & adaptive suspension - I much prefer the handling of the 340. More stable. More predictable. Handles rough roads better. Flatter cornering. The 340 is slightly slower off the line, but the linear acceleration of the 340 is way more satisfying. My 335 was weak after 5000 RPM while the 340 pulls to 7000.

I agree that there are more mods for making the 335 fast. B58 is still early. Right now I'm running JB4 and Meth injection on the B58 and it is fast enough for now. Long term goal is to get to 450 WHP, but I think I'll have to be patient for the mod world to develop reliable solutions.

My vote is for the B58 unless you need lots of mod options.

[bimmer456]

Originally Posted by Brett530

My personal experience with my 2012 F30 335 and my 2017 340, both with dynamic handling & adaptive suspension - I much prefer the handling of the 340. More stable. More predictable. Handles rough roads better. Flatter cornering. The 340 is slightly slower off the line, but the linear acceleration of the 340 is way more satisfying. My 335 was weak after 5000 RPM while the 340 pulls to 7000.

I agree that there are more mods for making the 335 fast. B58 is still early. Right now I'm running JB4 and Meth injection on the B58 and it is fast enough for now. Long term goal is to get to 450 WHP, but I think I'll have to be patient for the mod world to develop reliable solutions.

My vote is for the B58 unless you need lots of mod options.

Have you tried sport + with 340 it launches pretty good in that mode. There are flash tunes now with b58 as well as piggy back so more options becoming available.

[jmg]

Originally Posted by FastF30

The 2014/15 is the best year to buy... highest ranking reliability those years...

It's also a year older and probably has 15k miles more on it than a 2016 340i. I haven't really heard anything bad about the B58 reliability either. Besides, it's a BMW, not a Honda. Reliability is a luxury and deep pockets is a necessity in almost any used BMW.

Originally Posted by FastF30

also it's a 100lbs+ less in the front end compared to the 340.... resulting in better handling....

The 340i also out brakes the 335i by 5 feet and does a 0.91g on the skidpad vs the 335i's 0.89g. The 340i is a more developed F30. The suspension, steering... it's been updated.

Stock 340i is .2 slower in the quarter vs 335i

All the numbers I've seen put the 340i at 13.3 and the 335i at 13.8. Regardless, 0.2 seconds either way is negligible. Tire pressures, temperature, elevation, track conditions, even wind can swing a 1/4 by 0.2 seconds. The driver can make that swing even wider, so I don't think a 0.2 1/4 mile difference is a reliable test of which car is "faster".

In the end, these cars are actually very close to one another. If 150 less lbs compliments your driving style more than another person's, then that is the right choice for you. To me, weight can easily be shaved by stripping out the interior. Changing your suspension is more expensive. The power band of the B48 is also different, so that is a consideration. It has a bit more torque, and power comes a bit later but for a wider range. To me, that's an improvement: torque is where it needs to be down low, and power extends farther. The N55 has more mods to work with, but that depends on how far the owner is going to go. If they are only ever going to get a tune, charge pipe, suspension, exhaust and intake... then the additional options that the N55 has doesn't really apply. These basic mods are all available for the 340i, and the market will only grow as the N55s start to get more and more scarce.

[BimmerSkunk]

Removed

[SmoothStyle1]

Originally Posted by Usef_Afande

Hi everyone,
I'm currently in the market to purchase a new(to me) BMW 335/340.

I think the biggest difference between 2015 and 2016 is the engine.
If that is the case can someone tell me which one they would recommend.
And if it's not only the engine, what else are some of the biggest differences.

I apologize in advance if this is a topic that has been heavily discussed, If so, please share the link to it.

Thank you very much.

I've owned an N54, two N55s and now a B58 and I can say unequivocally that the B58 is my favorite engine. Go with the 340i.

The N54 was the quickest, but the B58 is the best overall, more linear acceleration, zero turbo lag and engineered to be more reliable and efficient.

[FastF30]

Originally Posted by jmg

The 340i also out brakes the 335i by 5 feet and does a 0.91g on the skidpad vs the 335i's 0.89g. The 340i is a more developed F30. The suspension, steering... it's been updated.

All the numbers I've seen put the 340i at 13.3 and the 335i at 13.8. Regardless, 0.2 seconds either way is negligible. Tire pressures, temperature, elevation, track conditions, even wind can swing a 1/4 by 0.2 seconds. The driver can make that swing even wider, so I don't think a 0.2 1/4 mile difference is a reliable test of which car is "faster".

In the end, these cars are actually very close to one another. If 150 less lbs compliments your driving style more than another person's, then that is the right choice for you. To me, weight can easily be shaved by stripping out the interior. Changing your suspension is more expensive. The power band of the B48 is also different, so that is a consideration. It has a bit more torque, and power comes a bit later but for a wider range. To me, that's an improvement: torque is where it needs to be down low, and power extends farther. The N55 has more mods to work with, but that depends on how far the owner is going to go. If they are only ever going to get a tune, charge pipe, suspension, exhaust and intake... then the additional options that the N55 has doesn't really apply. These basic mods are all available for the 340i, and the market will only grow as the N55s start to get more and more scarce.

M340i comes with upgraded Mbrakes which is an option on the 335i which I do have... so you need to compare apples to apples.... I'm sure BMW put the brakes on as stock due to the extra weight... as for the skid pad... well when I drove the 340i I did find it to want to understeer more than the 335i.... but hey that just could be me... and the guy that wrote that article... and from others I heard...and...

quickness is very close stock but from all I've seen leans N55 not that it matters to most on here since just about everybody basically tunes... once it's tuned the low end grunt is there... I was just saying really can't compare this category since it is so close...


strip out the interior? really.... couldn't I just do the same?... little extreme to do for most on here in the forums... I'd consider another different type of car if it's going to be just a track car

[FastF30]

getting back to reliability... reliability score is based on the J.D. Power and Associates Vehicle Dependability Study

2015 3.5 stars

2016 3 stars

2017 3 stars

2018 3.5 stars

yes this is looking at overall reliability.... but as mentioned there has been specific issues with the early b58 motors... so how you interpret this information is upto you..

[bimmer456]

I haven't noticed any difference in reliability with my car and any car I previously owned which were all Japanese.

[cfm56d7b]

Reliability is a function of two basic principles:

- Specific design changes intended to improve reliability
- Whether these design changes meet the stated goals (measures of success)

N55 has a longer service history but also has known issues, such premature connecting rod bearing wear. No engine is perfect. All one has to do is Google BMW N63 engine reliability.

B series have been redesigned as modular engines with many deliberate and thoughtful design changes. B48 is a 4 cylinder engine. B58 is B48 with 2 extra cylinders. Only time will tell how these changes support reliability goals.

By design and performance, B58 is a better all around engine.

Ability to accommodate modifications within a design envelope is a totally different discussion. Alpina did not take stock N55 engine, added a flash tune, and congratulated themselves. Alpina's engineers made many structural changes to expand the performance envelope of N55 engine in order to maintain expected reliability of a mass market vehicle.

[jmg]

Originally Posted by FastF30

M340i comes with upgraded Mbrakes

There is no such thing as an F30 M340i. There is only the F30 340i and the G20 M340i.

Originally Posted by FastF30

which is an option on the 335i which I do have... so you need to compare apples to apples.... I'm sure BMW put the brakes on as stock due to the extra weight... as for the skid pad... well when I drove the 340i I did find it to want to understeer more than the 335i.... but hey that just could be me... and the guy that wrote that article... and from others I heard...and...

quickness is very close stock but from all I've seen leans N55 not that it matters to most on here since just about everybody basically tunes... once it's tuned the low end grunt is there... I was just saying really can't compare this category since it is so close...

The B58 uses all the technology from the N55 with upgraded temperature management amongst other things. If the enemy of efficiency is heat then the potential of the B58 is much greater than the N55. A 150 lb tradeoff is not that bad when you consider the tuning potential of the B58. This is newer, and a more far reaching territory here. The N55 is about at it's peak, so we have to leave it behind to move forward.

Note that I have an S55 and I am a big fan of this engine, but the potential of the S58 engine in the next gen G80 just show how strong it is. All signs point to a close to 500hp G80 with the S58.

Originally Posted by FastF30

strip out the interior? really.... couldn't I just do the same?...
little extreme to do for most on here in the forums... I'd consider another different type of car if it's going to be just a track car

You used the wider availability of mods to the N55 as an argument against the B58 which is also extreme compared to what most people here on the forums do. It is only fair to open up the arguments to the extreme sides of the B58 as well. More potential in the engine for 150 lbs which is easily lost if you are pushing the car more towards the track than the street.

In reality, we are talking about extremes here. Most people will not be taking advantage of the wider availability of mods to the N55. Most people are not skilled enough to feel the 150 lb. difference. I'm not sure what kind of tires you had on the 340i vs the 335i, nor if it was on the same track, or if you did in on the streets one random afternoon in the middle of traffic. I doubt very much you will be using the 150 lb advantage of the 335i to shave tenths of a second off your lap times. I doubt most people on the forums even keep track of their lap times. Most people just want a car that is fun and fast for what they do: commute and some spirited driving. If that is the case, the B58 is the way to go simply because they will likely have less miles on them than an older N55. They might even still have a warranty.

[jmg]

Originally Posted by SeanSkiVT

On just the first 2 pages of this forum there's one with rod knock being replaced (mine), and another for scored cylinder walls. There was a stop sale in 2016 for rod bearing issues, and there's a SIB for bad turbos burning coolant. If you haven't seen ANYTHING bad, you've got your head in the sand.

Compared to what though? Toyotas and Hondas? I'm being relative to the history of bimmers. Rod bearing issues and Bimmers aren't strangers, they're long time buddies. Google N55 Rod Bearing.

[FastF30]

Originally Posted by jmg

They might even still have a warranty.

sorry 340i sport version I meant... but still comes with Mbrakes standard no matter what you call it...

I'd definitely go with lowest miles... I have extended warranty to cover the length of my loan...

as you said... most would never notice..

Me personally.... I bought the 335i only cause it is awd compared to the M3 and for the reasons I listed compared to the 340i and I'm happy to the point of absolutely no regrets... Just my personal preference... when the new M3 goes awd I'll be having one of those.... no matter what I'll be waiting for the 3rd year production... either new... or right about a year after my loan is payed off used... that's my plan anyways...

[ceedawg]

Originally Posted by FastF30

The new G20 I'm expecting they made many changes to the motor...

Including the car coming with a 5000psi HPFP! That right there is an added key tunng for reliable hp and big mods

[Shortgamer]

I was in the same boat as op a few months ago. Came from an 08 328...I can't speak for the 12 to 15 335 but I love my new used 16 340i! Just last night I had it in sport plus and hammered it coming out of a round about...she jumped sideways and I stayed in it and the car just smoothly came right out of it. Car is soooo fun!!!

[bimmer456]

Originally Posted by Shortgamer

I was in the same boat as op a few months ago. Came from an 08 328...I can't speak for the 12 to 15 335 but I love my new used 16 340i! Just last night I had it in sport plus and hammered it coming out of a round about...she jumped sideways and I stayed in it and the car just smoothly came right out of it. Car is soooo fun!!!

The chassis handles predictably and will usually sort itself out if you don't do anything crazy without the electronic nannies but it's good to know they are there though to a lesser degree in sport plus.