I tried looking online but have a hard time finding out exactly what the number on the gears of the car represent. What’s the difference between 1-3 or 2-5?
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The values are specific to the car model. They represent gears in the transmission of the car.
A transmission is a mechanical device that converts the rotation of the engine to rotation at the tires.
The numbers represent a sequence of gears from the lowest number of times a tire would rotate per time the engine rotates to the highest number of times a tire would rotate per time the engine rotates.
An engine at idle will rotate somewhere between 750 to 1200 times per min. That is called revolutions per minute or rpms for short.
A car typically when starting will be started in first gear it is not desirable to go have the tire spin quickly right away. As the car’s speed increases you use higher number gears.
Usually numbers above 4 represent what are known as over-drive gears. Where the number of times the tire rotates is faster than one turn of the tires for every turn of the engine.
This is a table for a 5 speed manual transmission from a Porsche 986.
In first gear the engine turns 3.5 times for every one rotation of the tire. 4 the gear is almost a 1:1 ratio and 5 gear is an overdrive gear.
1st gear 3.50
2nd gear 2.118
3rd gear 1.429
4th gear 1.029 G86
5th gear 0.79 G86
https://californiamotorsports.net/pages/porsche-986-boxster-transaxle-specifications
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