
MOTOR TUNING RS46 (Step 2A) |

Motor |
M3 | RS46 | ||
Layout/Cylinders |
V8 |
V8
|
||
Valves/Cylinder |
4 |
4
|
||
Bore |
(in.) |
3.62 |
N/A
|
|
Stroke |
(in.) |
2.96 |
N/A
|
|
Capacity |
(cm3) |
3,999 |
4,620
|
|
Compression ratio |
(:1) |
12.0 |
11.4
|
|
Max. output (SAE) |
(HP / rpm) |
414 - 8,300 |
525 - 8,200
|
|
Max. torque |
(lbs-ft / rpm) |
295 - 3,900 |
383 - 3,800
|
|
Power-to-weight ratio |
(lbs / HP) |
8.94 |
7.05
|
|
Performance |
M3 | RS46 | ||
Drag Coefficient |
(cx) |
0.31 |
0.32
|
|
Top Speed |
(mph) |
155 |
207
|
|
Acceleration 0-60 mph |
(sec) |
4.7 |
4.1
|
|
Brakes |
M3 | RS46 | ||
Front ventilated disc-diameter |
(in.) |
14.2 |
15
|
|
Rear ventilated disc-diameter |
(in.) |
13.8 |
14.2
|
|
Fuel Consumption |
M3 | RS46 | ||
City |
(mpg) |
14 |
13.8
|
|
Highway |
(mpg) |
20 |
21
|
|
Tank Capacity, approximate |
(gal) |
20 |
20
|
|
Weight |
M3 | RS46 | ||
Unladen weight |
(lbs) |
3704 |
3670
|
|
Maximum load |
(lbs) |
882 |
|
|
Weight Distribution (Front - Rear) |
(%) |
51.2 - 48.8 |
51.2 - 48.8
|
|
Wheels |
M3 | RS46 | ||
Wheel dimension (Front) |
8.5 x 18 |
8.5 x 19
|
||
Tire dimensions (Front) |
245/40 ZR 18 |
245/35 ZR 19
|
||
Wheel dimension (Rear) |
9.5 x 18 |
11 x 19
|
||
Tire dimension (Rear) |
265/40 ZR 18 |
305/25 ZR 19
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||