When it comes to pairing wine with tin sardines, it's important to consider the flavor and texture of the fish as well as any additional flavors that may be present in the tin.
Since sardines are oily and have a strong flavor, it's best to choose a wine that can hold up to these characteristics. A dry white wine like Sauvignon Blanc, Pinot Grigio or Albariño can be a good match as they have bright acidity that can cut through the oiliness of the sardines.
If you prefer red wine, try a light-bodied red such as Pinot Noir or Gamay which can also complement the fishy flavor of sardines without overwhelming it.
Overall, it's important to experiment with different wine and sardine combinations to find what works best for your individual taste preferences.