Unless your track has a bridge to create a figure of 8 then one side of the car will wear more than the other. And in your case with the lefts wearing more, you run anti-clockwise I assume? Front to rear is the same, the force of the acceleration loads the rear wheels more, hence more wear.
Before attempting to balance the wear it might be better to check why they wear. The best tip given to us is to look under the shell. If there's a lot of foam, one can assume your car is wheel spinning and not gaining traction.
Also inspect the type of wear, outer or inner, perhaps there's too much roll and with a 64mm tyre, I find it hard its not chunked if there's so much wear.
It's tough with a foam spec car to maintain good suspension geometry, I recommend buying 5 sets at a time and working through them in cycles. It keeps my suspension geometry the same through each cycle of the tyre set. Later I true as many as I can to a smaller setup and get at least two good runs from each set, some even more.
You have 500,000 in the front, it's almost locked, it will be very aggressive during "on power" acceleration. If your rear end is loose, then power sliding can also increase wear. Finally, the track may be abrasive and it amplifies wear characteristics... Yes, sadly it can be a waste of good tyres...Unless you are having a good time doing it!!
