Got this set of xr-4 from PX my S1 today. not 100% sure on off set, i already ask Joe for info. set of 4, good tyres. not sure how much they worth, but 380 would makes me very happy.
Awww man, if these were advertised couple days ago i would have snapped them up! If still available in couple of weeks ill take them GLWS
You can measure the offset yourself using common sense and wikipedia Offset (wheel) - Wikipedia, the free encyclopedia