Wheel width

[macca]

Factory wheel track should be 1605 front and 1625 rear on a Y61.
The Y60 was 1530 and 1535 ex factory

Those numbers will change depending on rim offset and options IE wide wheel packs etc... but... your rear should be a tad wider track than the front

Its a leaf rear, there is a 100mm or there abouts difference.

You have no need to worry about it being damaged or modded, that's how the Boffins from Nissan dispatched them.

It can be a bit of a pain when in ruts, the back move about a bit trying to follow the fronts. We have recently done a few K's on roads that were wet with shallow tyre tracks left in the now dry mud, the back had a mind of its own at times!