Ddaddy said

Actually, I bet they were quite a bit wider when standing still. The problem with a still photo like that is that it doesn't tell the whole tale. You can see that the tires are wider at the top (shorter side wall) than they are at the bottom. The wheel is winding up and the tread is getting narrower.

That track is also very well prepped with lots of VHT rubber down to help with traction.

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