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2004 Lamborghini Gallardo Gear Ratios Calculator, MPH, Top Speed

 


This calculator outputs the how fast the Lamborghini Gallardo can go in each gear as calculated by the gear ratios, engine redline and tire size.
The ultimate top speed may be limted by the power, drag and aerodynamics of each individual car.

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Tire Size
(345/30/20)
/ -
OR
Tire Diameter
(inches)
 
Final Drive Ratio
Redline (RPM)
1st Gear
2nd Gear
3rd Gear
4th Gear
5th Gear
6th Gear
7th Gear
8th Gear

RPM 1st Gear 2nd Gear 3rd Gear 4th Gear 5th Gear 6th Gear 7th Gear 8th Gear
500 3.96 5.48 7.12 8.91 10.8 12.58 0 0
600 4.75 6.58 8.55 10.69 12.96 15.09 0 0
700 5.54 7.67 9.97 12.47 15.12 17.61 0 0
800 6.33 8.77 11.4 14.25 17.28 20.13 0 0
900 7.12 9.86 12.82 16.04 19.44 22.64 0 0
1000 7.91 10.96 14.25 17.82 21.59 25.16 0 0
1100 8.7 12.06 15.67 19.6 23.75 27.67 0 0
1200 9.49 13.15 17.1 21.38 25.91 30.19 0 0
1300 10.28 14.25 18.52 23.16 28.07 32.71 0 0
1400 11.08 15.34 19.95 24.95 30.23 35.22 0 0
1500 11.87 16.44 21.37 26.73 32.39 37.74 0 0
1600 12.66 17.54 22.8 28.51 34.55 40.25 0 0
1700 13.45 18.63 24.22 30.29 36.71 42.77 0 0
1800 14.24 19.73 25.65 32.07 38.87 45.28 0 0
1900 15.03 20.83 27.07 33.85 41.03 47.8 0 0
2000 15.82 21.92 28.5 35.64 43.19 50.32 0 0
2100 16.61 23.02 29.92 37.42 45.35 52.83 0 0
2200 17.41 24.11 31.35 39.2 47.51 55.35 0 0
2300 18.2 25.21 32.77 40.98 49.67 57.86 0 0
2400 18.99 26.31 34.2 42.76 51.83 60.38 0 0
2500 19.78 27.4 35.62 44.55 53.99 62.89 0 0
2600 20.57 28.5 37.05 46.33 56.15 65.41 0 0
2700 21.36 29.59 38.47 48.11 58.31 67.93 0 0
2800 22.15 30.69 39.9 49.89 60.46 70.44 0 0
2900 22.94 31.79 41.32 51.67 62.62 72.96 0 0
3000 23.73 32.88 42.75 53.45 64.78 75.47 0 0
3100 24.53 33.98 44.17 55.24 66.94 77.99 0 0
3200 25.32 35.07 45.6 57.02 69.1 80.5 0 0
3300 26.11 36.17 47.02 58.8 71.26 83.02 0 0
3400 26.9 37.27 48.45 60.58 73.42 85.54 0 0
3500 27.69 38.36 49.87 62.36 75.58 88.05 0 0
3600 28.48 39.46 51.3 64.15 77.74 90.57 0 0
3700 29.27 40.55 52.72 65.93 79.9 93.08 0 0
3800 30.06 41.65 54.15 67.71 82.06 95.6 0 0
3900 30.85 42.75 55.57 69.49 84.22 98.12 0 0
4000 31.65 43.84 57 71.27 86.38 100.63 0 0
4100 32.44 44.94 58.42 73.05 88.54 103.15 0 0
4200 33.23 46.03 59.85 74.84 90.7 105.66 0 0
4300 34.02 47.13 61.27 76.62 92.86 108.18 0 0
4400 34.81 48.23 62.7 78.4 95.02 110.69 0 0
4500 35.6 49.32 64.12 80.18 97.18 113.21 0 0
4600 36.39 50.42 65.55 81.96 99.33 115.73 0 0
4700 37.18 51.52 66.97 83.75 101.49 118.24 0 0
4800 37.98 52.61 68.4 85.53 103.65 120.76 0 0
4900 38.77 53.71 69.82 87.31 105.81 123.27 0 0
5000 39.56 54.8 71.25 89.09 107.97 125.79 0 0
5100 40.35 55.9 72.67 90.87 110.13 128.3 0 0
5200 41.14 57 74.1 92.66 112.29 130.82 0 0
5300 41.93 58.09 75.52 94.44 114.45 133.34 0 0
5400 42.72 59.19 76.95 96.22 116.61 135.85 0 0
5500 43.51 60.28 78.37 98 118.77 138.37 0 0
5600 44.3 61.38 79.8 99.78 120.93 140.88 0 0
5700 45.1 62.48 81.22 101.56 123.09 143.4 0 0
5800 45.89 63.57 82.65 103.35 125.25 145.92 0 0
5900 46.68 64.67 84.07 105.13 127.41 148.43 0 0
6000 47.47 65.76 85.5 106.91 129.57 150.95 0 0
6100 48.26 66.86 86.92 108.69 131.73 153.46 0 0
6200 49.05 67.96 88.35 110.47 133.89 155.98 0 0
6300 49.84 69.05 89.77 112.26 136.05 158.49 0 0
6400 50.63 70.15 91.2 114.04 138.2 161.01 0 0
6500 51.42 71.24 92.62 115.82 140.36 163.53 0 0
6600 52.22 72.34 94.05 117.6 142.52 166.04 0 0
6700 53.01 73.44 95.47 119.38 144.68 168.56 0 0
6800 53.8 74.53 96.9 121.16 146.84 171.07 0 0
6900 54.59 75.63 98.32 122.95 149 173.59 0 0
7000 55.38 76.72 99.75 124.73 151.16 176.1 0 0
7100 56.17 77.82 101.17 126.51 153.32 178.62 0 0
7200 56.96 78.92 102.6 128.29 155.48 181.14 0 0
7300 57.75 80.01 104.02 130.07 157.64 183.65 0 0
7400 58.55 81.11 105.45 131.86 159.8 186.17 0 0
7500 59.34 82.2 106.87 133.64 161.96 188.68 0 0
7600 60.13 83.3 108.3 135.42 164.12 191.2 0 0
7700 60.92 84.4 109.72 137.2 166.28 193.72 0 0
7800 61.71 85.49 111.15 138.98 168.44 196.23 0 0
7900 62.5 86.59 112.57 140.76 170.6 198.75 0 0
8000 63.29 87.69 114 142.55 172.76 201.26 0 0
8100 64.08 88.78 115.42 144.33 174.92 203.78 0 0
RPM 1st Gear 2nd Gear 3rd Gear 4th Gear 5th Gear 6th Gear 7th Gear 8th Gear





Some additional information on how these are calculated:

When D is the diameter of the tire, the car moves forward a distance πD with each revolution of the tire. If there are F revolutions per unit of time, it moves forward at a speed of πD´F per unit of time. If D is in inches and F is in revolutions per minute (rpm), the above result will be in inches per minute. There are 63,360 inches in a mile and 60 minutes in an hour, so one inch per minute equals 60/63360 miles per hour or 1/1056 mph. So we have the following formula:

V(mph) = D(in) ´ F(rpm) ´ (π/1056)

In the automotive industry, the coefficient 1056/π is usually taken to be equal to 336 (exactly it is 336.1352398...) and the formula corresponding to the above is:

(mph)(gear ratio)(336) = (tire diameter in inches)(rpm)

With the above numerical approximation, both formulas are identical if we consider that (rpm)/(gear ratio) is the rate of rotation of the tires. So the "gear ratio" as the number of rotations of the driveshaft for each turn of the tire. This ratio is normally more than 1, except in overdrive gear. So, calling R the "gear ratio", your final answer is:

V(mph) = D(in) ´ F(rpm) ´ (π/1056) / R

or, approximately: V = (D ´ F) / (336 ´ R)

where V is the velocity (in mph), D the tire diameter (in inches), F the engine rpm, and R the gear ratio.

 


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