In a large bowl mix the corn, tomatoes, black beans, and cilantro. Cut the lime in half and squeeze the lime juice onto the corn salsa and mix. The olive oil can be added for additional flavor.
To make the brats:
Simply place the brats on medium heat on the grill and cook until done to your preference. Typically you would want these to be at least 165* in the middle to be done. This usually takes about 15 minutes.