A point of interest on wheel balancing,I changed my rear tyre recently,and as I am a little pedantic,I checked the balance of the wheel WITHOUT the tyre on.I was surprised,I thought that the valve hole (theoretically the lightest part of the wheel) would be at the top.It wasn’t, it was 90degrees out.The old tyre/wheel had about 4 inches of weights attached.After the new tyre was fitted I balanced it and it took one and a half small weights only.