Technical data62 63
BMW i Convertible features Colors Equipment
Weight 128i 135i
Unladen weight lb 3494 (3571) 3638 (3704)
Weight distribution, front/rear
Manual transmission % 48.3 /51.7 49.4/50.6
Automatic transmission (128i: STEPTRONIC transmission; 135i: 7-speed Double Clutch Transmission [DCT]) % 49.1/ 50.9 49.7/50.3
Permitted payload lb 750 750
Per mitted axle lo ad, f ront /rea r lb 2050/2467 2161/2469
Engine
Liters/type/valves per cylinder 3.0/inline 6/4 TwinPower Turbo 3.0/inline 6/4
Displacement cu cm 2996 2979
Bore/Stroke in 3.30/3.50 3.30/3.50
Nom inal output @ rpm hp 23 0 @ 6500 300 @ 5800
Maximum torque @ rpm lb-ft 200 @ 2750 300 @ 1300-5000
Compression ratio :1 10.7 10.2
Trans miss ion
Manual transmission gear ratios
I/II/III :1 4.32/2.46/1.66 4.11/ 2.32/1. 54
IV/V/VI/R :1 1.23/1.00/0.85/3.94 1.18/1.0 0/0.85/3.73
Final d rive rati o :1 3.23 3.08
Automatic transmission gear ratios
I/II/III/ IV :1 4.07/2.37/1.55/1.16 4.78/3.06/2.15/1.68
V/VI/VII/R :1 0.85/0.67/—/3.20 1.39/1.20/1.00/4.45
Final d rive rati o :1 3.73 3.46
Performance
Top speed
1
mph 130 [15 0] 130 [150]
Acceleration 0-60 mph
2
(128i: STEPTRONIC transmissio n; 135i: 7-spee d Double Clutch Trans mission [ DCT] ) sec 6.4 (7.0) 5.4 (5 .3)
Fuel consumption
Manual transmissi on – City/ Highway mpg 18/28 19/28
Automatic transmission – City/Highway
(128i: STEPTRONIC tran smiss ion; 135i: 7-s peed Double Clutc h Transmi ssion [DCT] )
mpg 18/27 19/25
Fuel tank capacity, approx. gal 14 14
1
Top speed limited electronically. All-season tires limited to 130 mph.
2
BMW AG test results. BMW urges you to obey all posted speed laws and always wear safety belts.
3
EPA-estimated figures are for comparison purposes only. Your actual mileage will vary, depending on speed,
driving habits, trip length and driving conditions; actual mileage may be lower.
Figures in ( ) apply to vehicles with automatic transmission, if different from manual transmission.
Figures in [ ] apply to vehicles with Sport Package or M Sport Package with increased top-speed limiter.
Equipment charts Technical data BMW Services
.
.
.
59.6
.
38.6
104.7
.
37.0
54.0
42.2
Wheels
128i 135i
Tire dimens ions – standard
front
rear
205/50
205/50
215/4 0
245/35
Wheel dimensions – standard
front
rear
17 x 7.0
17 x 7.0
18 x 7.5
18 x 8.5
Material light cast alloy light cast alloy
Brakes
Front – diameter in 11. 8 13.3
Rear – diameter in 11. 8 12.8
All dimensions are shown in inches and apply to 128i with standard wheels.
U.S. Importer: BMW of North America, LLC, Woodcliff Lake, NJ 07677. All illustrations and specifications contained in this brochure are based on the latest product
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