2008 BMW 1 Series - Road Test Specs

2008 BMW 1 Series Convertible

(3.0L 6-cyl. Twin-turbo 6-speed Manual)
Vehicle
Model year2008
MakeBMW
Model135i
StyleConvertible
Base MSRP$39,100
Options on test vehicleSparkling Graphic Metallic Paint ($475); Coral Red Boston Leather ($1,450); Sport Package ($1,000 -- includes 18-inch wheels with performance tires, sport seats, M steering wheel, Shadowline trim); Comfort Access System ($500); iPod/USB Adapter ($400); BMW Assist ($750).
As-tested MSRP$44,450
Drivetrain
Drive typeRear-wheel drive
Engine typeTurbo 3.0-liter inline-6
Displacement (cc/cu-in)2,973cc (181.3 cu-in)
Block/head materialAluminum/magnesium
Valvetrain24 valves, double-overhead cam
Compression ratio (x:1)10.2
Redline (rpm)7,000
Horsepower (hp @ rpm)300 @ 5,800
Torque (lb-ft @ rpm)300 @ 1,400
Transmission type6-speed manual
Transmission and axle ratios (x:1)I = 4.055, II = 2.396, III = 1.582, IV = 1.192, V = 1, VI = 0.872, R = 3.677, Final Drive = 3.077
Chassis
Suspension, frontAluminum double-pivot
Suspension, rearFive-link fully independent in lightweight steel
Steering typeRack-and-pinion
Steering ratio (x:1)16:01
Tire brandBridgestone
Tire modelPotenza RE050A
Tire typePerformance
Tire size, front215/40R18 85Y
Tire size, rear245/35R18 88X
Wheel size18 by 7.5 front -- 18 by 8.5 rear
Wheel materialLight alloy
Brakes, frontVentilated disc
Brakes, rearVentilated disc
Track Test Results
0-45 mph (sec.)3.7
0-60 mph (sec.)5.5
0-75 mph (sec.)8.2
1/4-mile (sec. @ mph)13.8 @ 101.3
0-60 with 1 foot of rollout (sec.)5.2
Braking, 30-0 mph (ft.)26
60-0 mph (ft.)107
Slalom, 6 x 100 ft. (mph)68.6
Skid pad, 200-ft. diameter (lateral g)0.85
Sound level @ idle (dB)66.5
@ Full throttle (dB)77.3
@ 70 mph cruise (dB)68.7
Test Driver Ratings & Comments
Acceleration comments4,700-5,000 rpm launch speed. Best technique: Clutch out fast (no slip). Very little wheelspin required. Very easy to launch.
Braking ratingVery Good
Braking commentsSolid, consistent pedal feel. Immediate effectiveness. The same brake performance we've come to expect from BMW.
Handling ratingVery Good
Handling commentsSkid pad: Different balance left to right. Counter-clockwise feels more adjustable. Clockwise is heavy understeer. Overall, good grip. Slalom: Not as stiff or as well damped or as easy to control at limit as 1 Series coupe -- all to be expected from convertible. Still, quite well-mannered despite compromise to structure and weight.
Testing Conditions
Elevation (ft.)Not available
Temperature (F)77.4
Wind (mph, direction)Not available
Fuel Consumption
EPA fuel economy (mpg)17 city/26 highway
Edmunds observed (mpg)17.2
Fuel tank capacity (U.S. gal.)14
Dimensions & Capacities
Curb weight, mfr. claim (lbs.)3,660
Curb weight, as tested (lbs.)3,686
Weight distribution, as tested, f/r (%)49.7/50.3
Length (in.)171.7
Width (in.)68.8
Height (in.)55.6
Wheelbase (in.)104.7
Track, front (in.)58.0
Track, rear (in.)59.3
Turning circle (ft.)35.1
Legroom, front (in.)41.2
Legroom, rear (in.)31.3
Legroom, 3rd row (in.)Not available
Headroom, front (in.)38.6
Headroom, rear (in.)37.0
Headroom, 3rd row (in.)Not available
Shoulder room, front (in.)56.0
Shoulder room, rear (in.)43.0
Shoulder room, 3rd row (in.)Not available
Seating capacity4
Cargo volume (cu-ft)8
Max. cargo volume, seats folded (cu-ft)Not available
Warranty
Bumper-to-bumper4 years/50,000 miles
Powertrain4 years/50,000 miles
Corrosion12 years/Unlimited miles
Roadside assistance4 years/Unlimited miles
Free scheduled maintenance4 years/50,000 miles
Safety
Front airbagsStandard
Side airbagsStandard dual front
Head airbagsStandard
Knee airbagsNot available
Antilock brakes4-wheel ABS
Electronic brake enhancementsBrake fade compensation, start-off assistant, brake drying, brake standby features, Dynamic Brake Control (DBC)
Traction controlStandard
Stability controlStandard
Rollover protectionStandard
Tire-pressure monitoring systemStandard
Emergency assistance systemNot available
NHTSA crash test, driverNot tested
NHTSA crash test, passengerNot tested
NHTSA crash test, side frontNot tested
NHTSA crash test, side rearNot tested
NHTSA rollover resistanceNot tested

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