You should replace your old track when installing a new garage door.
As you can probably imagine, each brand and model of garage door has been specifically designed to work in conjunction with a specific type of track. Additionally, keeping the old track will usually void any manufacturer’s warranty that would have otherwise applied to the garage door.
Unfortunately, there is no international standard when it comes to garage door tracks. Let’s look at the positive: you receive a new track that is free from old grime, dirt, and rust. In essence, replacing your old track is an inexpensive way to insure that your entire garage door system is as safe and reliable as possible.