[vasudeva]

Thanks a lot. Yes since the tyre size and spec of Corolla is perfectly acceptable and I am not an `enthusiast', I prefer not to change the original specs too much. Of course, a higher spec may have given some better ride comfort but would have involved compromise with FE. So I usually trust the manufacturer (in this case Toyota). I do not know what a higher spec would bring, and am usually conservative.

But, Corolla has Bridgestone Potenza and perhaps Yokohama/Michelin/Bridgestone may be decent options. Of course, right now, my tyres still have a lot of life.

Again, one question is still unanswered: do the manufacturer adjust car mechanics for a specific tyre size, and changing tyre specs may lead to sub-optimal car dynamics? if one changes the tyre without such adjustments from a qualified, knowledgable shop.