Update README.md

README.md

@@ -60,4 +60,5 @@ CR-V => car_model
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 ## Known issues
-As shown above, load index and speed rating are sometimes not properly recognized. More training examples with these two attributes are required.
+- As shown above, load index and speed rating are sometimes not properly recognized. More training examples with these two attributes are required.
+- The training data contains `tyre_size` entity that captures the combination of width, ratio and diameter, but these three are additionally provided as standalone entities. Therefore, the model can output either, or both entities, and this inconsistency might cause some inconvenience.