Lamborghini Miura Roadster (Zn75) – Specs & Performance

Lamborghini Miura Roadster (Zn75) Specs & Performance

General

Type Miura Roadster or Zn75
Years built 1968
Production 1 units
Chassis nr. 3498
Presentation 1968 Brussels Auto Show, Zn75 in December 1970 in Paris
Type of car Two door, two seater with targa-style roof construction
Designed by Bertone, Marcello Gandini
Built by Bertone, modified by the ILZRO

Dimensions

Wheelbase 2504 mm / 98.41 in
Overall length 3470 mm / 136.37 in
Overall width 1760 mm / 69.17 in
Overall height 1050 mm / 41.27 in
Front track 1412 mm / 55.49 in
Rear track 1412 mm / 55.49 in
Ground clear. 130 mm / 5.11 in
Front overhang 933 mm / 36.67 in
Rear overhang 933 mm / 36.67 in
Weight 1000 kg / 2205 lbs

Chassis

Structure Sheet-steel unitized body, lightened welded box sections by Bertone
Body Monocoque steel construction with aluminum front and rear sections
Suspension All-independent, consisting of double transverse wishbones with coil springs, telescopic shock absorbers and anti-roll bars
Brakes All-wheel Girling disc brakes, hydraulically operated via a dual circuit system
Front 305 mm / 11.99 in
Rear 280 mm / 11 in
Steering type Unassisted rack and pinion, 3.4 turns lock to lock
Turning circle 11.2 m / 37 ft
Front tire size HS 205-15
Rear tire size HS 205-15
Type of tire Pirelli Cinturato Belted
Front wheel 7×15 inch
Rear wheel 7×15 inch
Type of wheel Campagnolo cast magnesium on original Bertone prototype Modified wheels were mounted after the ILZRO acquired the car.

Engine

Type V-12 60 degree, light-alloy block with gearbox and differential built in the same block and pressed-in liners mid mounted, rear wheel drive
Distribution Dual overhead camshafts, chain drive, two valves/cyl.
Main Bearings 7
Cyl. Capacity 3939 cc / 240 ci
Bore & stroke 82 x 62 mm
Compr. Ratio 9.5
Max. power 350 Bhp at 7000 rpm
Max. torque 369 Nm at 5100 rpm
Cooling system Cross-flow radiators and twin electric fans
Ignition Two coils and two Marelli distributors
Plugs Bosch 250P
Alternator 660 Watt
Fuel system Dual electric Bendix fuel pumps, 4 tripple-choke Weber 40 IDA 30 carburetors
Fuel type 100 Octane
Lubrication Wet sump, common engine-transmission lubricant
Fuel consumption 19 Lit/100 Km
Electr. system 12 V

Drivetrain

Type Lamborghini all synchromesh five-speed + reverse manual
Clutch dry-single plate, hydraulically operated
Disc diameter 266.7 mm / 10.48 in
1st gear ratio 2.520:1 – Max speed 93 Km/h or 58 Mph
2nd gear ratio 1.735:1 – Max speed 135 Km/h or 84 Mph
3rd gear ratio 1.225:1 – Max speed 188 Km/h or 117 Mph
4th gear ratio 1.000:1 – Max speed 225 Km/h or 140 Mph
5th gear ratio 0.815:1 – Max speed 280 Km/h or 174 Mph
Reverse gear ratio 2.765:1 – Max speed 0 Km/h or 0 Mph
Final drive ratio 4.08:1

Performance

Top speed 280 Km/h / 174 Mph
0 – 100 Km/h 6.60 sec.
Standing Km 24.40 sec.
1/4 Mile 14.60 sec. reaching 101 Mph

Capacities

Fuel 90 Liter / 24 Gallon
Engine oil 14 Liter / 4 Gallon
Cooling system 14 Liter / 4 Gallon
Luggage 140 Liter / 37 Gallon

Pricing

Current value $ 8,000,000 – $ 10,000,000
Probably the most expensive Lamborghini ever next to the 350 GTV, an estimated value of US $ 10,000,000 was quoted in 2013