GTA Wiki talk:Manual of Style/Vehicles/Speed Testing

Obtaining Acceleration and Top Speed Results Example
As stated above, modifications cannot be used on vehicles to in any way change the acceleration and/or top speed of a vehicle while testing. This will provide incorrect results for players that use an unmodified version of single player and those who play GTA Online. From here on out, I will continue to use the term “mods” very lightly, because they are only providing us a utility for calculations and readings, not in any way changing an end result. Like the video, the only “mods” used here are those which will allow us to do the following:
 * Give us a digital speedometer in both km/h and mph (preferably the mentioned one I use which provides a decimal point for increased accuracy).
 * Provide us with a flat, level road that stretches the entire span of the map.
 * Provide us a mechanic that can allow a 0-to-60 mph calculation with very high accuracy.
 * A trainer which will only be used to spawn in the vehicle (and the flat road for testing).

The “Mods” Used
Here is a small list of “mods” that I use to give us our speed readings: With our tools and utilities now layed out, it’s time to begin testing.
 * Menyoo Trainer (vehicle and flat road spawning)
 * Figureight Top Speed Test Road (our flat road for testing)
 * Simple Speedometer by Slik (the only digital speedometer I know of which provides speeds with a decimal point, provides both km/h and mph)
 * NFS gauge - RPM Gear Speedometer & Timer (used for 0-to-60 acceleration)

The Officer DWM (talk) 18:20, March 19, 2020 (UTC)