I heard they have different wheel bore.

Style 177 is only common style between two and they have different part #s and wheel width for each.

Cross spoke -style 177

E53
9,5 x 20 Front
10,5 x 20 Rear
ET 45
ET 30
275/40 R20W
315/35 R20W

E70
10 x 20 Front
11 x 20 Rear
ET 40
ET 37
275/40 R20W
315/35 R20W