kosmo

http://f80.bimmerpost.com/forums/sho...d.php?t=892746


6 speed stick standard!!

at 3300lb the power/weight ratio is competitive putting near the 991 and Vette and above the Cayman

rubber_ducky

looks like they hit the ball out of the park with this one. high-revving twin turbo 6 making lots of torque.

utkinpol

I only wonder why do they put turbos on those motors instead of superchargers. it would make torque/hp much more linear with no lag. but I guess some just like turbos.
and on a second thought I am not sure to what level I would like to be involved with a such a complex built bmw motor these days. may be a pita to maintain.

wanna911

Emissions/Fuel Efficiency I assume.

PS, BMW now has my attention again. Sounds like they are coming to their senses.

Standard Manual, and not calling the car something it's not (an M3). Much props to BMW for that. Looking forward to seeing it in ALMS.

ScorpionT

Turbos are much more efficient and can offer more linear power and a flatter torque band. The design is actually fairly simple, nothing complex about it.

Overall I think the new car would be quite good. Im not fond of them changing the name from M3 to M4 to designate the number of doors. I was hoping the M4 would be a slight step up, something in between the M3 and M6 as predicted early on, but the M4 should still be a nice car provided they dont make it too soft.

Glen

Fast but overheats and goes to limp mode quickly...great street car though

TRAKCAR

^^ Exactly, but you could tune it and put massive coolers on I suppose.

Lots of HP and pretty light weight is there, just would have to be made durable.

Serge944

The engine is nothing special - a juiced up N55 (335i). But the N55s handle 600+ hp ALL DAY LONG.

They made a substantial effort to reduce weight with carbon parts - that's a huge step in the right direction.

With software and meth injection, this car will give the 991 GT3 a run for its money, while still providing the German refinement that the American offerings lack.

Mvez

This new lightweight chassis with the S65 is what the E92 M3 should have been from the very beginning.

I have no desire to own a coupe that says "M4" on the back. It's retarded what they are doing with the name designations, but I am glad they didn't badge it as an M3. They should slap the the S65B44 into the new chassis and let that be the M3 coupe.

I'd rather own the fat, slower E92 M3 coupe with hydraulic steering and an S65 over the M4. I don't care how much engineering (and marketing) you put into a turbo engine, even BMW cannot replicate the thrill of a high revving NA engine, regardless of what tricks and technology they use.

kosmo

Shouldnt the sedan be called the m4? After all it does have 4 doors.


I think bmw is aware of the heating issue leading to so many limp modes. Seems like theres effort there w/ new sump and intercoolers.

Last question- "bmw wheres the CL wheels?!"
Youre missing out!

ShakeNBake

To complicate things further, there will likely be a M4 4-door a'la grand coupe.

I am amazed to see the weight reduction - that is truly a big step in the right direction. Jury out on EPS steering (though steering feel was butchered on the E9X M3, so few will notice).
Turbo will be nice around town, but would prefer to see a high strung NA motor like the S54 or S65. Doubt this will be a viable car for use on the track in Texas. The previous two generations were barely usable due to cooling issues.

sunnyr

The engine is quite different from N55 though - 2 single scroll turbo chargers instead of 1 twin scroll, air-water intercooler instead of air-air. New forged crankshaft, pistons, cylinders, connecting rods, magnesium sump.

BMW claims they beefed up the cooling, but wonder if it will be enough to avoid limp mode.

Quikag

Looks pretty damn nice really. lower weight, broad torque curve, six-speed manual, etc. As mentioned above, the major x-factor is overall reliability and cooling system ability for aggressive track days.

The new twin turbo V8 M5's at COTA for the BMWCCA event earlier this year were going into limp mode within a lap or two for the charity rides. That wasn't impressive at all to me. Then one of the BMW Performance Academy instructors was trying to talk me into doing a driving school at their facility (in Alabama I think) and I laughed to myself on how quickly I would put those cars into limp mode with how I drive. No thanks.

It does say in the above picture 'race track capable engine and transmission cooling.' TBD I guess.

Nizer

Street cars are made for the street. Buy a race car for the track. You'll be safer, faster, and have more fun. Most eventually figure this out.

New M4 with manual transmission is looking like a very attractive for street option.

Serge944

Sorry, I was referring to the N54 - the predecessor using twin single scroll turbos (much like this new M engine), which featured more forged internals and a higher tuning ceiling than the N55.

These cars will be putting down 700hp in no time.