Just to keep this thread 'on point'..... the factors involved in this gearing change are highly dependent on the following: #1, as always, rider/owner preference. Beyond that, #2 would be 'type' of riding', or intended 'gain' from the gear change {could be that going down vs up may be the correct choice}, 3) Engine status (stock vs modified) and even status of 'fresh' vs 'worn or tired', Rider/bike weight, 4) MPG vs Acceleration, 5) Loading...... 1 rider vs frequent 2-up, and 6) which has not been mentioned yet, but came up in a discussion on the subject: Type and size of rear wheel. With all the changes made to these bikes, a good many get different size wheels and tires. That alone can result in a 'final drive' ratio change vs the intended 'stock' performance levels. But, this is all good info. And, if I forgot something, please add it in. I'm owning up to the 'I like it this way' aspect of this being the Number One consideration....... But I think we all should acknowledge that the Yamaha Engineers weren't all that dumb, and set the bike up the way they did for a reason. Of course, things change.....and making those changes is what this thread is all about. But, we also have to consider the affects of those changes....both 'pro' and 'con'.....and remember that they all probably have some of both. If it was only 'good'....we'd have probably all done it by now.....or when you found your bike....it would'ave come that way!
TSD