Very interesting, I'm sure this is also a problem for the UK model.
A couple of months ago, I noticed the offside front tyre was wearing inconsistently and as a result, probably illegal. The nearside looked borderline, but again uneven. Anyway, I went to a tyre specialist and requested 2 new tyres.
I returned to the tyre place having left it with them, and it turns out I need all 4 replaced! They described the problem as 'feathering', and yes, they were not exaggerating. With the tyres off, there was clearly a problem.
This was around the 26,000 miles mark. Original tyres were the Pilot Primacy, which I assume were the original set (bought car at about 12,000 miles). The tyre specialist only had 1 pair of Michelin Pilot Sports rather than the 2 pairs I needed. To avoid waiting a couple of days, on their advice I opted for Bridgestone RE50As. So far, I am happy with the Bridgestones, but given the Civic and it's issues, I fear the tyres will end up the same way.
Funnily enough, whilst mine were being done, a newer Civic came in. Same problem, although not as bad as mine, so they only needed the fronts replacing.
I wonder if the upside down rear shocks (rectified at 2nd service, after 20,000 miles) and the front bump stop problems might have had any influence on the excessive and uneven wear and tear?
I've not so far mentioned it to Honda or my dealer, but I am extremely unhappy.