hi guys,

recently im planin' to replace the factory rims&tyers on my G37s coupe.
so the target set that im lookin at is
front: 245/35/20 8.5j
rear: 265/30/20 10j

based on the fitment diagram, i am advised that the minimum width of the tyer that 10j can hold is 295mm

but those days i did research, I learned that people shared their opinions saying 265 would be fine or even the best choice for a 10j rim at rear

so,I wonder if those 2 statements are contradictory to each other, or there are different variable/standard for the rims (might it be j or jj?)

btw,im from Asia,dose that mean there are different standards in N.A and Aisa?

thx in advance