wheels

[haz]

does anyone know if 4 stud wheels from a Picasso fitted with 185/65R15 tires will fit a c5 fitted with 205/65/15 wheels and tires with out adverse effect

[VertVega]

There shouldn't be any problems except that the 185/65/15 load index would be something like 88 (and H).
You should check your C5's load index from your car's documents.
For example mine has specifications as 215/55/16 with load index 93 and speed W.