I've just been doing a bit reading, apparently some of the alloys were ET0 and fitted with 30mm spacers, which would make the car (131 that is) ET-(negative)30. Based on that if these wheels fit straight onto a 131 with no spacers then there's not a hope they'll go onto the 126, but looking at the picture I doubt that's the case. Rather than you splashing out, I've a set of 10mm hubcentric spacers. If you can get the car here you're welcome to test fit them and see how it looks/feels, probably better than spending money on a set too find out they're too big/small.