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Gear Ratio Calculator >>

2012 Lamborghini Aventador 7 speed ISR Gear Ratios Calculator, MPH, Top Speed

 


This calculator outputs the how fast the Lamborghini Aventador 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 4.81 6.48 8.03 9.94 12.09 13.96 0
600 3.6 5.77 7.78 9.64 11.93 14.51 16.76 0
700 4.2 6.73 9.07 11.25 13.92 16.93 19.55 0
800 4.8 7.69 10.37 12.85 15.9 19.35 22.34 0
900 5.4 8.65 11.66 14.46 17.89 21.77 25.13 0
1000 6 9.61 12.96 16.07 19.88 24.18 27.93 0
1100 6.6 10.58 14.26 17.67 21.87 26.6 30.72 0
1200 7.2 11.54 15.55 19.28 23.86 29.02 33.51 0
1300 7.8 12.5 16.85 20.89 25.84 31.44 36.3 0
1400 8.4 13.46 18.14 22.49 27.83 33.86 39.1 0
1500 9 14.42 19.44 24.1 29.82 36.28 41.89 0
1600 9.6 15.38 20.74 25.71 31.81 38.69 44.68 0
1700 10.2 16.34 22.03 27.31 33.8 41.11 47.47 0
1800 10.8 17.31 23.33 28.92 35.78 43.53 50.27 0
1900 11.4 18.27 24.62 30.53 37.77 45.95 53.06 0
2000 12 19.23 25.92 32.13 39.76 48.37 55.85 0
2100 12.6 20.19 27.22 33.74 41.75 50.79 58.65 0
2200 13.2 21.15 28.51 35.35 43.74 53.2 61.44 0
2300 13.8 22.11 29.81 36.95 45.72 55.62 64.23 0
2400 14.4 23.07 31.1 38.56 47.71 58.04 67.02 0
2500 15 24.04 32.4 40.17 49.7 60.46 69.82 0
2600 15.6 25 33.7 41.77 51.69 62.88 72.61 0
2700 16.2 25.96 34.99 43.38 53.68 65.3 75.4 0
2800 16.8 26.92 36.29 44.99 55.66 67.71 78.19 0
2900 17.4 27.88 37.59 46.6 57.65 70.13 80.99 0
3000 18 28.84 38.88 48.2 59.64 72.55 83.78 0
3100 18.6 29.8 40.18 49.81 61.63 74.97 86.57 0
3200 19.2 30.76 41.47 51.42 63.62 77.39 89.36 0
3300 19.8 31.73 42.77 53.02 65.6 79.81 92.16 0
3400 20.4 32.69 44.07 54.63 67.59 82.22 94.95 0
3500 21 33.65 45.36 56.24 69.58 84.64 97.74 0
3600 21.6 34.61 46.66 57.84 71.57 87.06 100.54 0
3700 22.2 35.57 47.95 59.45 73.56 89.48 103.33 0
3800 22.8 36.53 49.25 61.06 75.54 91.9 106.12 0
3900 23.4 37.49 50.55 62.66 77.53 94.32 108.91 0
4000 24 38.46 51.84 64.27 79.52 96.73 111.71 0
4100 24.6 39.42 53.14 65.88 81.51 99.15 114.5 0
4200 25.2 40.38 54.43 67.48 83.5 101.57 117.29 0
4300 25.8 41.34 55.73 69.09 85.48 103.99 120.08 0
4400 26.4 42.3 57.03 70.7 87.47 106.41 122.88 0
4500 27 43.26 58.32 72.3 89.46 108.83 125.67 0
4600 27.6 44.22 59.62 73.91 91.45 111.25 128.46 0
4700 28.2 45.19 60.91 75.52 93.44 113.66 131.25 0
4800 28.8 46.15 62.21 77.12 95.42 116.08 134.05 0
4900 29.4 47.11 63.51 78.73 97.41 118.5 136.84 0
5000 30 48.07 64.8 80.34 99.4 120.92 139.63 0
5100 30.6 49.03 66.1 81.94 101.39 123.34 142.42 0
5200 31.2 49.99 67.39 83.55 103.38 125.76 145.22 0
5300 31.8 50.95 68.69 85.16 105.36 128.17 148.01 0
5400 32.4 51.92 69.99 86.76 107.35 130.59 150.8 0
5500 33 52.88 71.28 88.37 109.34 133.01 153.6 0
5600 33.6 53.84 72.58 89.98 111.33 135.43 156.39 0
5700 34.2 54.8 73.87 91.58 113.32 137.85 159.18 0
5800 34.8 55.76 75.17 93.19 115.3 140.27 161.97 0
5900 35.4 56.72 76.47 94.8 117.29 142.68 164.77 0
6000 36 57.68 77.76 96.4 119.28 145.1 167.56 0
6100 36.6 58.65 79.06 98.01 121.27 147.52 170.35 0
6200 37.2 59.61 80.35 99.62 123.26 149.94 173.14 0
6300 37.8 60.57 81.65 101.22 125.24 152.36 175.94 0
6400 38.4 61.53 82.95 102.83 127.23 154.78 178.73 0
6500 39 62.49 84.24 104.44 129.22 157.19 181.52 0
6600 39.6 63.45 85.54 106.04 131.21 159.61 184.31 0
6700 40.2 64.41 86.83 107.65 133.2 162.03 187.11 0
6800 40.8 65.38 88.13 109.26 135.18 164.45 189.9 0
6900 41.4 66.34 89.43 110.86 137.17 166.87 192.69 0
7000 42 67.3 90.72 112.47 139.16 169.29 195.49 0
7100 42.6 68.26 92.02 114.08 141.15 171.7 198.28 0
7200 43.2 69.22 93.31 115.68 143.13 174.12 201.07 0
7300 43.8 70.18 94.61 117.29 145.12 176.54 203.86 0
7400 44.4 71.14 95.91 118.9 147.11 178.96 206.66 0
7500 45 72.11 97.2 120.5 149.1 181.38 209.45 0
7600 45.6 73.07 98.5 122.11 151.09 183.8 212.24 0
7700 46.2 74.03 99.79 123.72 153.07 186.21 215.03 0
7800 46.8 74.99 101.09 125.32 155.06 188.63 217.83 0
7900 47.4 75.95 102.39 126.93 157.05 191.05 220.62 0
8000 48 76.91 103.68 128.54 159.04 193.47 223.41 0
8100 48.6 77.87 104.98 130.14 161.03 195.89 226.2 0
8200 49.2 78.84 106.27 131.75 163.01 198.31 229 0
8300 49.8 79.8 107.57 133.36 165 200.73 231.79 0
8400 50.4 80.76 108.87 134.97 166.99 203.14 234.58 0
8500 51 81.72 110.16 136.57 168.98 205.56 237.37 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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