Took the time out of my day to measure the different track widths using the new Xray 12mm hex wheels with the Xray 12mm wheel hexes.

All measurement are done on the XB'16 using:

20mm ride height (placed on Hudy 20mm droop blocks)
3 degree toe-in in the rear
1 degree toe-out in the front
Hinge pin inserts in the middle position front and rear.
Measured on the rear of the rear wheels (no tires)
Measured on the front of the front wheels (no tires)

Width using stock 14mm wheel hexes and Xray V2 14mm wheels:Front: 245mm
Rear: 245mm

Width using 12mm wheel hexes and Xray 12mm wheels:

Front:

365354 -0.75mm = 242mm

365353 0mm = 243,5mm

365355 +0.75mm (1 stripe) = 245mm

365356 +1.5mm (2 stripe) = 246,5mm

365357 +2.25mm (3 stripe) = 248mm

365355 +3.00mm (4 stripe) = Not enough threads on axle to secure the wheel nut.

Rear:

365353 0mm = 243mm

365355 +0.75mm (1 stripe) = 245mm

365356 +1.5mm (2 stripe) = 247mm

365357 +2.25mm (3 stripe) = 249mm

365355 +3.00mm (4 stripe) = 251mm

365354 -0.75mm (2pcs) = 3.8mm

365353 0mm (2pcs) = 4.6mm (same width as standard 14mm wheel hexes)

365355 +0.75mm (1 stripe)(2pcs) = 5.3mm

365356 +1.5mm (2 stripe)(2pcs) = 6.1mm

365357 +2.25mm (3 stripe)(2pcs) = 6.8mm

365358 +3.00mm (4 stripe)(2pcs) = 7.6mm

365359 +3.75mm (5 stripe)(2pcs) = 8.4mm

The small inner flange that goes towards the bearing are not included in the measurements .

This flange adds 0.3mm on all the above numbers.

Source: B. Karlsen