I've not dealt with many wheels, 3 sets from three different bikes. Plus, I check them on my home balancer. It beat Harbor freight quality, but barely. Based on that, one rim from the six total has the heavy spot at the valve stem. The other 5 are at random locations on each.Yeah, the dremel trimming is a little overboard. I trim my weights with a hammer and chisel, much quicker.
I do think its close enough to not matter much. Its a fun diy job since a person can get so fanatical about balance, but by the time I start trimming a 10 g weight with a dremel tool.....its just for me.
I marked the heavy spot of my Ninja 500 wheel and lined up the yellow dot on the Dunlop 501. As I mentioned before, the actual heavy spot was about 100 degrees off from the valve stem.
The happy result is that the tire and wheel assembly is perfectly balance with zero weights.
Both sets of my PR3s did not have a dot on them.
It's the bar code on the Michelin's.
I just put a PR2 on the rear of the bike and it had the same embedded black and white bar code the last 2 sets of PR3's had on them. As to that being the light spot, it is what I read on this forum. But if you got confirmation from Michelin that they do not mark the tire than that's very interesting.
I just put a PR2 on the rear of the bike and it had the same embedded black and white bar code the last 2 sets of PR3's had on them. As to that being the light spot, it is what I read on this forum. But if you got confirmation from Michelin that they do not mark the tire than that's very interesting.
I will chime in, as much as I hate tire threads.
The bar code several years ago was the spot.
However, that has changed. I have heard from two Michelin Reps that the bar code is only for tire tracking through production.
Michelin boasts that their production process is so accurate that there is no heavy or light spot. The tires are perfect.
I have somewhat proven this.
If you balance the wheel.
Then mount the tire, IF you need weight it will oly be .25oz. Key word is if.
I use a Snap-On Computer balancer.
Not some home made static balancer with a lot of guessing to gain my results.