Do you have both of these tyres?
I prepared the data we had from LDD and made 56890. This part is official.
Teemu made the tyre 28290. It is Hold-voted at the Part Tracker.
However, at Bricklink and Brickset 28290 is an alias, or new version of 56890.
But the LDD data and Teemu's design are different.
56890 is divided into 15 sections and a bit wider than the rim it fits, 6014.
28290 is divided into 16 sections and have the same width as the rim, 6014.
I think the LDD data was wrong and that we should replace it with the design from Teemu.
I prepared the data we had from LDD and made 56890. This part is official.
Teemu made the tyre 28290. It is Hold-voted at the Part Tracker.
However, at Bricklink and Brickset 28290 is an alias, or new version of 56890.
But the LDD data and Teemu's design are different.
56890 is divided into 15 sections and a bit wider than the rim it fits, 6014.
28290 is divided into 16 sections and have the same width as the rim, 6014.
I think the LDD data was wrong and that we should replace it with the design from Teemu.