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I just wondered, if the parts of the trucks (specially wheels and steering parts) have uneven wear (off?) by this practice.

Apart from that, sounds like a good engineering/optimization result.

PS: But there is a solution to that problem, as I see the other posts around .... just bring the trucks with uneven wear to the UK after a while ...

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Yes you do get some uneven wear, but I'm sure UPS's fleet maintenance keeps track of that too. For the tires, you can rotate them on a regular schedule to reduce repeated wear patterns and spread it more evenly on all of the tires before they're replaced.

Thanks, so for the tires are two possible solutions: Rotate them, or bring them to the UK, if rotation is to much work. ;-)

a standard tire rotation should handle most of the asymmetric wear on the tire. I'm not sure about the steering system.

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