It is impossible. Altough they share the same pcd, the offset is completely different. The wira's rim will hit your brake caliper befor you even put on the wheel bolts.
The wheels for the proton will sit further inside. It might or might not hit the brake calipers depending on the spoke design. but there's oso the problem of the absorber strut to the wheel clearance..
For your reference, 15"x7" E30 rims would have offset of 20-25.. Proton or any other jap rims have offset of 35-45..
U can probably still use those rims with spacers but if the spacers do not have concentric cones, u'll have vibration.