I have seen this tires balancing method in one of the RC Mag… unsure which one. Probably in RCCA or in RC-car.. but it look the same. Here some of the details done by RcModz.. thanks there mate.

Let me quote some of the balancing act done by RCmodZ:

This is a very simple process indeed; you need a model aircraft prop balancer, a 17mm Hex and Nut, some Blue tack & Fuel Tube. You could use some 1/10 scale stick on touring car weights for a more accurate reading but Blue tack works just fine. I weighed each piece after balancing and rounded up when needed for this review.

It does make a difference.

We pay lots of attention to many things on a car when racing at high level, engine, clutch, drive chain, bearings; and so on… we pay almost no attention to the wheels themselves. I’ve always noticed this with tyres and that’s one of the reasons I like GRP’s so much, but with Proline’s new array of treads it’s hard to stick to 1 brand. I’m glad I’ve done this myself because I believe it’s a very easy way to help balance your car and a balanced car driven well will be a fast car!