XRAY - Model racing cars

Hello everyone,,
I've seen, most used tires with less shore in front, this may be because of the greater wear of the rear tires - But also I think there should be a way to have more steering. with a car harder and faster in front and more faster in the track
Someone can tell me if this is true, or explain it better?
best regards..

As tires are used, it is normal for the tread to gradually become shallower and overall tire performance to change. In addition, irregular tread wear may occur for a variety of reasons that may lead you to have to replace a tire sooner rather than later