PDA

View Full Version : BMW F10 M5 Spyshots


Gamite
07-02-2009, 10:37 AM
http://img.worldcarfans.com/2009/7/medium/4980137.jpg

"Our spy photographers have once again managed to catch BMW's upcoming 2011 M5 sedan undergoing testing in Europe.

Although this particular mule is still heavily camouflaged, we can see several pieces of traditional M-trim including widened fenders, massive cross-drilled brake discs, and quad tailpipes.

The current M5's 500 bhp 5.0-liter V10 engine will be replaced by the new 555 hp twin-turbo 4.4-liter V8 from the recently introduced X5 M and X6 M. There is speculation that the V8 could be retuned to produce upwards of 600 hp in the M5, but that remains to be seen.

As we have previously reported, the 2011 M5 could adopt a kinetic energy recovery system (KERS) similar to what is used in Formula One racing. Designed to capture energy that would normally be wasted, the supposed system would deliver additional boost for added performance.

Another green technology that could appear on the M5 is a variable displacement system which would deactivate several of the engine's cylinders for improved fuel efficiency."

http://img.worldcarfans.com/2009/7/large/5569415.jpg

http://img.worldcarfans.com/2009/7/large/3026783.jpg

Source: http://www.worldcarfans.com/109070220238/2011-bmw-m5-spy-photos-show-new-details

bmwm5lover
07-02-2009, 10:54 AM
Man o man. Look at those brakes.

europrince
07-02-2009, 10:56 AM
Huge brakes!!

BigD
07-02-2009, 12:13 PM
I can't believe cars of this price range and performance pretentions still use floating calipers.

Gamite
07-02-2009, 12:48 PM
I can't believe cars of this price range and performance pretentions still use floating calipers.

what do you mean?

BigD
07-02-2009, 01:02 PM
what do you mean?

List the possible meanings of what I said and I'll pick one.

Gamite
07-02-2009, 01:29 PM
I can't believe cars of this price range and performance pretentions still use floating calipers.

1. floating calipers are too good for this price range
2. floating calipers aren't good enough for this price range.

ericdalinda
07-02-2009, 01:35 PM
im guessing the new m5 will have 600 horsepower.

MiroE36
07-02-2009, 01:53 PM
does it come with the bullet-holes or are those optional upgardes?

Bullet Ride
07-02-2009, 02:00 PM
1. floating calipers are too good for this price range
2. floating calipers aren't good enough for this price range.

He's saying that they aren't good enough for this price range. I agree and disagree. For the average user the dual piston front and single piston rear floating calipers (the brakes on the current model M5) have more than sufficient braking capability. For the motorsport enthusiast however a fixed caliper / floating rotor set up is in check.
BMW does offer a 6 piston fixed caliper in their performance line up though
http://www.caradvice.com.au/wp-content/uploads/2008/04/image44679_b.thumbnail.jpg

Just from the spy pics it looks like there might be a fixed caliper on the car because it looks like it might have a floating rotor.

edit: KERS... yes!

edit 2:

based on this pic they are 6 piston calipers so they are probably fixed
http://img.photobucket.com/albums/v163/darknightohio/2011-BMW-M5-F10-5.jpg

BigD
07-02-2009, 03:19 PM
1. floating calipers are too good for this price range
2. floating calipers aren't good enough for this price range.

2. floating calipers aren't good enough for this price range.

BigD
07-02-2009, 03:22 PM
He's saying that they aren't good enough for this price range. I agree and disagree. For the average user the dual piston front and single piston rear floating calipers (the brakes on the current model M5) have more than sufficient braking capability. For the motorsport enthusiast however a fixed caliper / floating rotor set up is in check.

It's not just braking capability, but that's certainly part of it, although a single piston floater can easily provide more torque than a multipiston fixed. The only advantage floating calipers have is price. For a car that costs 100 grand, saving a thousand bucks on calipers is pathetic.

Bullet Ride
07-02-2009, 04:52 PM
although a single piston floater can easily provide more torque than a multipiston fixed.

If the area of the single big piston in the floating caliper is greater than the total area of the 6 pistons in the fixed caliper then yes. However I doubt that is true.

BigD
07-02-2009, 05:08 PM
If the area of the single big piston in the floating caliper is greater than the total area of the 6 pistons in the fixed caliper then yes. However I doubt that is true.

If you think about the math behind circle area, it's actually not hard to achieve this. But increasing piston area will decrease your caliper pressure, so simply adding more pistons won't give you more braking power. However, having a wider, fixed caliper will increase your brake pad width (which, with the right compound, is what will get you more torque and much better fade resistance) and improve your brake pedal feel.

V10 Power
07-02-2009, 08:17 PM
how can you tell the difference? Please elaborate

Bullet Ride
07-02-2009, 09:57 PM
how can you tell the difference? Please elaborate

The difference between floating and fixed rotors?

T.Dot_E30
12-01-2011, 11:10 AM
Just thought i'd add this here:

http://www.caranddriver.com/comparisons/2012-mercedes-benz-c63-amg-coupe-page-2
Speaking of brakes, the C63 stops from 70 mph in 161 feet. On the track, the brakes resist fading and feel strong, but again, the M3’s brake pedal is more responsive, and its 70-to-0-mph stopping distance is shorter: 153 feet.

I don't care if it's fixed or floating, as long as it brakes like an M3 does I'm good.

Source: Car and Drive E92 M3 vs the new C63 Benz
5 years old design and floating single piston calipers and the M3 still wins.

richie_s999
12-02-2011, 12:11 PM
Just thought i'd add this here:

http://www.caranddriver.com/comparisons/2012-mercedes-benz-c63-amg-coupe-page-2


I don't care if it's fixed or floating, as long as it brakes like an M3 does I'm good.

Source: Car and Drive E92 M3 vs the new C63 Benz
5 years old design and floating single piston calipers and the M3 still wins.

"We also deducted a tick from the Benz for looking a bit too much like a Honda Accord coupe.":D

yellowfever3
12-02-2011, 01:53 PM
have you driven the car? drive it on the track, and see how it stops...only way to know. brakes stop and slow down a car, nothing more. I'm sure that the engineers at BMW have equipped the M5 with brakes that are sufficient enough to stop the car they've produced. Don't mean to try and sound like a know it all, but just think about it, M cars are the best in nothing, but exceptional in everything!

richie_s999
12-02-2011, 02:32 PM
have you driven the car? drive it on the track, and see how it stops...only way to know. brakes stop and slow down a car, nothing more. I'm sure that the engineers at BMW have equipped the M5 with brakes that are sufficient enough to stop the car they've produced. Don't mean to try and sound like a know it all, but just think about it, M cars are the best in nothing, but exceptional in everything!

exceptional as far as a street car goes, on the track there is always better, I am pretty sure even factory BMW track built race cars have upgraded brakes.

the later and faster you can brake consistently means more time with in throttle, which means faster lap times, so they do slow down a car but also allow it to be faster