I'm on new rear springs so there is plenty of space at the back - as you say, probably a difference in offset on the wheels themselves (they are old VW wheels). The 205 tread does poke outside the arches a smidge (technically an MOT fail) but I don't have to MOT so not an issue.

"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10