Quote:
Originally Posted by jjmaine
I set my rear wheel like I always do though, with the MP chain alignment tool and by measuring how far the adjusting studs stick out of the back of the swingarm to make sure they match.
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This is no guarantee that that rear-tyre edges are parallel with front tyre's edges. This is more important than centering in swingarm because most alignment marks are off. On my 2002 pregen, the marks are off by 1/4". My 2008's marks twisted rear tyres off to left compared to front tyre. My 2009 did opposite with rear-wheel twisted to right.
When rear-wheel is not aligned parallel with front, this causes bike to "crab" when going down road, with rear wheel rling off to one side, not perfectly behind front. This parts a lateral force on front tyre and can cause shaking.
String-test is good way to test for front/rear alignment. Even eaisr are laser tools.