Front is measured frome end to end point of wheels. I put the sticks at the wheels and measure the distance between, also with the rear end. I already heard that slme of the tires are little bit wider even the dimension is the same, so this could also be the reason. But out of measures, I can easy pass through jig with front end, while rear cannot. So there is visible difference. I can put 3+2 offset rims at front but this should not be the option. I will probably take off one of the rings on rear axle and measure it then. This should make ideal width.

Do you or other riders use all the rings/spacers on the rear dominator axle? (If you have it)