Hi,
At 39450kms, I am a little sad to report that, my front tyre especially the right one is not in good condition.
With no apparnet alignment problem felt in the steering and the outer edge appearing fine, I was fooled.
This is what it looks like:
The left one is slightly better with wear in both edges:
The right rear:

I could not manage to catch it in either image, there is a small patch of wear every 2 inches all over on either side. We isolated a tyre related noise to this tyre. There was a bearing change in this wheel at the 30000kms service. Has that gone bad? Will know it when I go next week for my 40000kms service. The shock absorber looks fine from an external inspection and no suspension problems felt.
The left rear:

This looked fine as far as wear and tyre was concerned. This tyre in particular had suffered a couple of punctures, one of them was on the edge where the tread meets the sidewall.
The puncture:

Since this tyre was losing pressure (albeit very slowly, say in 3 weeks from 28 to 18), decided to check. The air leak was identified in the area where it was repaired once and a new repair did not succeed and so it has been gifted with a tube and fitted back in the same position.
The surprise:

When the tyre was inpsected for air leak, a nail (a 1cm small thin screw) was found in the tread, but was not long enough to cause air leak. Then we found the air leak as in the last image.
When the tyre was dismounted, we found this. The dark patch was an earlier puncture repair. Near it was this 1 inch long nail with the head inside and half of it buried into the tread from INSIDE. Nothing of the nail or the earlier repair was visible on the outside. How this nail got into the tyre is a mystery.
Coincidentally, even in my Marina, the front tyres are all worn out, the left rear sports a tube and the right rear is the best.