ahmedf

I just had some avon storm ultras fitted. The rear went on fine got balanced all ok.

However the front when put on the machine needed a 25 gram weight and a 90 gram weight. My mechanic was shocked. So he deflated tyre rotated the tyre around the rim 180 degrees and balanced again but this time it came to 75 grams instead of 90. he was still shocked and put the weights on and said report back as he was still not convinced.

Now at speeds of 30+ and also under harsh acceleration theres is notable shake in the steering and naturally gets worse the quicker i go.

went back to him today and he said take the weights off and see how it is, still shaking. i'm taking it back to him on tuesday but any help as to what the problem is would be great. Could it be a duff tyre?

its a k9 sv650s btw.

thanks