Staggered tyre widths

[C11ONX]

Hi all

I am after some help. 
I want to run staggered size wheels front to rear. I understand that the rolling circumference has to be similar. Does anyone know the exact tolerance so I don’t blow up the diff. 

I want to run this set up
245/40/20 front
275/35/20 rear

Rolling circumference 
2211.7 mm front
2200.7 mm rear

Difference
0.498%

Is this possible? Or could someone point me in the direction of a specialist who could help. 
Cheers