Gearshift
Have you ever been faced with a situation that required you to switch from one gear to another? It is not as simple as it may seem, particularly for those who have never driven a manual transmission vehicle. Why would you want to make things more difficult for yourself by providing an inaccurate representation of the speeds? If it had been drawn correctly, the tattoo might have done its subject more justice.
This tattoo is a permanent addition to your body and will never be removed. Therefore, there is no reason for you to not do it properly. Getting a tattoo of the gear that is drawn incorrectly and walking around with it is not the best choice. This is something that can only be attempted if you are willing to take the risk of a careless driver. In either case, he has the ability to argue that it refers to something else. Nice try, dude!