Tyre tracks have tender skin which can be torn on rocks and in gravel, it is recommended to keep them in a tank with a sand bottom.
You need to take care that he does not get a bacterial or fungal infection in his sores. Maintaining excellent water quality at this time is a must.
Adding a small amount of salt to the tank will assist in healing his wounds to heal faster. (What kind of algae eater do you have? Plecos are not very salt tolerant, it is hard on their kidneys!)
You can add "aquarium salt", found at most pets/aquatics stores, or you can use "kosher salt", which can be found in a grocery store. Do not use iodized salt or regular table salt! You can add a tablespoon per gallon, be sure to mix it in a separate container before adding it to the tank.
Melafix is an excellent product for preventing bacterial infections.
If you are already noticing signs of a bacterial infection, you may want to go with something a little stronger, an internal bacterial med, Maracyn 2 has always done a great job for me.
I might also add that the eel you have should reach a size of about 40 inches and MUST be moved into a much larger tank as SOON AS POSSIBLE. 180 gallons or more is preferable for this species.