135i vs M135i

[sochermit]

Is there a list of differences between the two? I believe that the 135i with PPK1 would have the same engine characteristics as the M135i. Also if the 135i has sport suspension it would also be similar. What is the major differences between the 135i and the M135i?

I guess I could go to the BMW web site and build each but I know most of you are really into this and can provide a straight forward answer.

[NYC6]

For one the M has the overboost feature and additional cooling. Also, the M has many parts of the M3's suspension. Others will chime in with more differences.

[sochermit]

Originally Posted by NYC6

For one the M has the overboost feature and additional cooling. Also, the M has many parts of the M3's suspension. Others will chime in with more differences.

What is the "overboost" feature?

[NYC6]

It offers an additional 40? ft lbs of TQ for like 7-8 seconds at WOT. Not much but gives the car an extra, short term adrenaline boost. Comes in handy for 0-60 times and 1/4 mile, thats about it though.

[sochermit]

Originally Posted by NYC6

It offers an additional 40? ft lbs of TQ for like 7-8 seconds at WOT. Not much but gives the car an extra, short term adrenaline boost. Comes in handy for 0-60 times and 1/4 mile, thats about it though.

Thanks for the comeback. I looked at my list of abbreviations and did not see "WOT". Would you please enlighten me once again?

[ptack]

Do you mean the 1M? There is no M135i sold in the US. You can get a 135i with M stuff and badges on the inside, but the only engine upgrade happens with the 135is which has the PPK. You can no longer get a 1M. I don't know whether BMW is redoing their web site to account for the 135is, but the configurator is down so you can't see differences in the options.

[Red Bread]

The M135i is a ROW car, not available in the US, based on the next generation 1er, the F20/F21. The 1M Coupe was a limited run E82 similar to the 135i, but with an entirely different suspension, an actual LSD, wider track, different exhaust and brakes and a slightly different engine.

[sochermit]

So many models, so much to learn and so little time.

[NYC6]

Originally Posted by sochermit

Thanks for the comeback. I looked at my list of abbreviations and did not see "WOT". Would you please enlighten me once again?

Wide Open Throttle.
I thought you were talking about the 1M.
I dont know anything about the M135, so you might want to dismiss my posts.

[sochermit]

Originally Posted by NYC6

Wide Open Throttle.
I thought you were talking about the 1M.
I dont know anything about the M135, so you might want to dismiss my posts.

My ignorance got in the way. I believe I mean the 1M model. I believe this is the new one for 2013.

[Red Bread]

Originally Posted by sochermit

I think this is what I was asking about. I am confused about all the different names of the 1 series. I could not see much difference between the 2012 135i and the next generation o 1/2 series except maybe some more suspension and the intro of the PPK1. I did not see an increase in cooling. And maybe a little more suspension, but I believe if you have the sports suspension it is the same.
Bottom line not much difference.

To further confuse you, for any E82 (the current 1 series coupe, the suspension is the same for non-sport, sport and m-sport coupes. The 1M Coupe has the same suspension as the E92 M3.

[ND40oz]

Originally Posted by sochermit

I think this is what I was asking about. I am confused about all the different names of the 1 series. I could not see much difference between the 2012 135i and the next generation o 1/2 series except maybe some more suspension and the intro of the PPK1. I did not see an increase in cooling. And maybe a little more suspension, but I believe if you have the sports suspension it is the same.
Bottom line not much difference.

The next generation 1er is a completely different chassis, it's the F20/F21 instead of the E81 3 door hatch or E87 5 door hatch.

The next gen 2 series is what is most likely going to replace the current US E82/E88. The E82 1er coupe and E88 1er Vert both continued unchanged into the 2013 model year. They just added "is" models in the US, which add the PPK.

[The Transporter]

Originally Posted by Red Bread

To further confuse you, for any E82 (the current 1 series coupe, the suspension is the same for non-sport, sport and m-sport coupes...

As long as you're talking 135s and not counting the mid-cycle change between 2010- and 2011+ model years.

[fs454]

Are there actual documented differences between the N54 in the 135i and the N54 in the 1M? I thought they were identical save for software.

[sochermit]

Originally Posted by Red Bread

To further confuse you, for any E82 (the current 1 series coupe, the suspension is the same for non-sport, sport and m-sport coupes. The 1M Coupe has the same suspension as the E92 M3.

So when my paperwork says "704 M Sport Suspension" does not mean anything?

[Dackelone]

Originally Posted by fs454

Are there actual documented differences between the N54 in the 135i and the N54 in the 1M? I thought they were identical save for software.

Similar but different engines. The 1M's engine is the same as used in the Z4is35. Mechanically is is a upgrade over the N54 in the 135i. Plus it has all the PPK2 cooling upgrades and new SW for the over boost feature. Officially the 135i had 300 Hp while the 1M has 335 Hp (SAE). Both were under rated by a bit.


Dackel

[Diver]

Originally Posted by sochermit

So when my paperwork says "704 M Sport Suspension" does not mean anything?

That is the standard suspension for the US 135i. It is equivalent to the sport suspension option in other models. The car is lowered 10mm and has stiffer springs and shocks.

As for the M135i hatch, it will probably show up when the revised Coupe hits the US in a year or so. I suspect models like the M135i will replace the likes of the 135is across the line.

[Red Bread]

Originally Posted by Dackelone

Officially the 135i had 300 Hp while the 1M has 335 Hp (SAE). Both were under rated by a bit.


Dackel

True, and the 1M and Z4 3.5is also dyno a good bit higher than even early N54's from the 135i and 335i.

[sochermit]

Originally Posted by Diver

That is the standard suspension for the US 135i. It is equivalent to the sport suspension option in other models. The car is lowered 10mm and has stiffer springs and shocks.

As for the M135i hatch, it will probably show up when the revised Coupe hits the US in a year or so. I suspect models like the M135i will replace the likes of the 135is across the line.

So many variations to keep up with and understand. A side note I am still waiting for the dealership to get the fix so that I can have the PPK1 installed.

[sochermit]

Originally Posted by NYC6

It offers an additional 40? ft lbs of TQ for like 7-8 seconds at WOT. Not much but gives the car an extra, short term adrenaline boost. Comes in handy for 0-60 times and 1/4 mile, thats about it though.

I see that the N55 has "0.6" listed for "Boost Pressure/Overboost". How does this equate to ft/lb? What does 0.6 mean?

[fs454]

Originally Posted by Dackelone

Similar but different engines. The 1M's engine is the same as used in the Z4is35. Mechanically is is a upgrade over the N54 in the 135i. Plus it has all the PPK2 cooling upgrades and new SW for the over boost feature. Officially the 135i had 300 Hp while the 1M has 335 Hp (SAE). Both were under rated by a bit.


Dackel

So internals are different, has anyone documented exact differences or have we not had these things long enough?

[Dackelone]

Originally Posted by fs454

So internals are different, has anyone documented exact differences or have we not had these things long enough?

This was all talked about when the 1M was coming out. Someone from M GmbH said the engines ARE different mechanically. Also something about the pistons and internals being better/upgraded. Recently someone posted that the primary cats are different than a 135i N54. I bet there are lots of little things M has tweaked. Plus as we all know the 1M has over boost and the PPK2 hardware standard.

1M engine code:
N54B30TO (250 kW) 340 PS DIN



Dack