Any decent tyre place should be able to do a four-wheel alignment and give you a printed report. Just phone somewhere and check - it might cost £30-ish, but at least you'll then have a clear picture of what's what.
It might be best to put the steel wheels back on if you want Citroen to take responsibility though - otherwise they'll just blame your wheels, and a court, trading standards etc would probably agree. If you're not using the original wheels then any wheel/tyre-related problems are probably yours rather than theirs.
What are the detailed tyre sizes of both the tyres for your alloys and the originals? If the overall radius is significantly different then this probably will result in the alignment being wrong. If so then either you need different tyres, or perhaps just need an alignment with them fitted (accepting that it's not Citroen's problem if they continue scrubbing).
The reports should include full measurements of details of camber and caster for all four wheels, even if they can't adjust some of the settings - see example...
Latest update went back to Autoworld (approved Citreon dealership ) with steel wheels fitted,they said they we will re track for free., which they have done but van still has some problem, and they want now to further investigate. So took it back Thursday and no works carried out, so now going back in Monday... fingers crossed . Ps they gave me a print out of 4 wheel alignment, but if they cannot adjust the rear, then surely they cannot align the vehicle correctly can they !!
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I think there may be some adjustment at the rear - not sure though.
If they've identified that it's not right then that's a great start. Now the ball's in their court, and it's their problem.
Let us know what happens - I'm sure lots of people will be interested.
I had an issue with the rears wearing on the outsides. Tried numerous different places and finally got sorted at a Citroen dealership near me. It's in Ireland tho. What the did was put a jig on the back axel to re-align it. I've done nearly 10,000 miles since and tyres are wearing perfect.
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