car.ldr wheels off by one LDU?

[Basil Bader]

I think I have found a small inaccuracy in the car.ldr file which is shipped with the LDraw parts library. All wheels (4624.dat) are at y=6:

Code:

1 7 -30 6 60 0 0 1 0 1 0 -1 0 0 4624.dat

but the pins of the "Plate 2 x 2 with 2 Wheel Pins" (4600.dat) are at y=5:

Code:

1 16 22 5 0 0 -1 0 1 0 0 0 0 1 wpin2.dat

It is also visible when moving any wheel in the X direction towards the center in LDCad or a similar application (see attached image)

Is there a reason for this difference of 1 LDU?