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Message: <blockquote data-quote="jarance" data-source="post: 353154" data-attributes="member: 21">Off wheel balancing is up to accuracy of 10 grams. whereas on-wheel balancing is up to an accuracy of 5 gram.Off balancing is done mostly by computer which tell the technician where to put the weight and how much weight. If you observe carefully, the computer will tell the technician the weight upto 10 grams.On-wheel balancing is by trial and error. most shop will do an off wheel balancing prior to doing an on-wheel balancing to take out the guessing work. If you observe carefully, on wheel balancing will required 2 person to do the work. one guy will feel the steering wheel to feel the vibration and tell the other technician where to put. By putting the weight on certain area, the vibration will either increase or decrease. similarly, increasing or decrease weight will also have the same effect.If your tyres is worn out on the inner, then your alignment is out of spec.Most tyre shop will recheck for free if you still faced wobbling when you do on wheel balancing.</blockquote>