Drag Racing 1/4 Mile times 0-60 Dyno Fast Cars Muscle Cars

Gear Ratio Calculator >>

2013 Subaru Impreza WRX 5 speed manual Gear Ratios Calculator, MPH, Top Speed

 


This calculator outputs the how fast the Subaru Impreza WRX 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.

If you like this calculator use the Google +1 button:

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 3.05 5.14 7.43 9.96 13.05 0 0 0
600 3.66 6.17 8.92 11.95 15.66 0 0 0
700 4.27 7.19 10.4 13.94 18.28 0 0 0
800 4.88 8.22 11.89 15.93 20.89 0 0 0
900 5.49 9.25 13.38 17.93 23.5 0 0 0
1000 6.09 10.28 14.86 19.92 26.11 0 0 0
1100 6.7 11.3 16.35 21.91 28.72 0 0 0
1200 7.31 12.33 17.83 23.9 31.33 0 0 0
1300 7.92 13.36 19.32 25.89 33.94 0 0 0
1400 8.53 14.39 20.81 27.88 36.55 0 0 0
1500 9.14 15.41 22.29 29.88 39.16 0 0 0
1600 9.75 16.44 23.78 31.87 41.77 0 0 0
1700 10.36 17.47 25.26 33.86 44.38 0 0 0
1800 10.97 18.5 26.75 35.85 46.99 0 0 0
1900 11.58 19.53 28.24 37.84 49.6 0 0 0
2000 12.19 20.55 29.72 39.83 52.22 0 0 0
2100 12.8 21.58 31.21 41.83 54.83 0 0 0
2200 13.41 22.61 32.69 43.82 57.44 0 0 0
2300 14.02 23.64 34.18 45.81 60.05 0 0 0
2400 14.63 24.66 35.67 47.8 62.66 0 0 0
2500 15.24 25.69 37.15 49.79 65.27 0 0 0
2600 15.85 26.72 38.64 51.78 67.88 0 0 0
2700 16.46 27.75 40.13 53.78 70.49 0 0 0
2800 17.06 28.77 41.61 55.77 73.1 0 0 0
2900 17.67 29.8 43.1 57.76 75.71 0 0 0
3000 18.28 30.83 44.58 59.75 78.32 0 0 0
3100 18.89 31.86 46.07 61.74 80.93 0 0 0
3200 19.5 32.88 47.56 63.74 83.54 0 0 0
3300 20.11 33.91 49.04 65.73 86.16 0 0 0
3400 20.72 34.94 50.53 67.72 88.77 0 0 0
3500 21.33 35.97 52.01 69.71 91.38 0 0 0
3600 21.94 37 53.5 71.7 93.99 0 0 0
3700 22.55 38.02 54.99 73.69 96.6 0 0 0
3800 23.16 39.05 56.47 75.69 99.21 0 0 0
3900 23.77 40.08 57.96 77.68 101.82 0 0 0
4000 24.38 41.11 59.45 79.67 104.43 0 0 0
4100 24.99 42.13 60.93 81.66 107.04 0 0 0
4200 25.6 43.16 62.42 83.65 109.65 0 0 0
4300 26.21 44.19 63.9 85.64 112.26 0 0 0
4400 26.82 45.22 65.39 87.64 114.87 0 0 0
4500 27.43 46.24 66.88 89.63 117.48 0 0 0
4600 28.03 47.27 68.36 91.62 120.1 0 0 0
4700 28.64 48.3 69.85 93.61 122.71 0 0 0
4800 29.25 49.33 71.33 95.6 125.32 0 0 0
4900 29.86 50.35 72.82 97.59 127.93 0 0 0
5000 30.47 51.38 74.31 99.59 130.54 0 0 0
5100 31.08 52.41 75.79 101.58 133.15 0 0 0
5200 31.69 53.44 77.28 103.57 135.76 0 0 0
5300 32.3 54.47 78.77 105.56 138.37 0 0 0
5400 32.91 55.49 80.25 107.55 140.98 0 0 0
5500 33.52 56.52 81.74 109.54 143.59 0 0 0
5600 34.13 57.55 83.22 111.54 146.2 0 0 0
5700 34.74 58.58 84.71 113.53 148.81 0 0 0
5800 35.35 59.6 86.2 115.52 151.42 0 0 0
5900 35.96 60.63 87.68 117.51 154.04 0 0 0
6000 36.57 61.66 89.17 119.5 156.65 0 0 0
6100 37.18 62.69 90.65 121.5 159.26 0 0 0
6200 37.79 63.71 92.14 123.49 161.87 0 0 0
6300 38.4 64.74 93.63 125.48 164.48 0 0 0
6400 39.01 65.77 95.11 127.47 167.09 0 0 0
6500 39.61 66.8 96.6 129.46 169.7 0 0 0
6600 40.22 67.82 98.08 131.45 172.31 0 0 0
6700 40.83 68.85 99.57 133.45 174.92 0 0 0
6800 41.44 69.88 101.06 135.44 177.53 0 0 0
6900 42.05 70.91 102.54 137.43 180.14 0 0 0
7000 42.66 71.94 104.03 139.42 182.75 0 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.

 


©2014 DragTimes - Disclaimer