Potenzas are silica based tyres. Any silica based tyre would wear out fast. Potenzas are sporty tyres. It is meant for grip and handling. Sporty tyres do not last as long as hard compound tyres.
so in other words potenza GIII is a failure and isn't upto the mark as hyped ???
and if not potenza GIII then which tyre is best as per current indian market ??
If you read the posts of this thread a little more carefully, you will find that his friend was looking for 195/60R15. So it is pretty clear that he would have put those on stock Jazz rims (15") and shod them in the Swift. Sorry for spoiling the fun if you were not seriously mistaken.