My car has a slight vibration that's proving difficult to track down. I'd like to eliminate (or preferably implicate) a very slightly warped alloy as the culprit. Unfortunately, the main speed at which the vibration shows is above the limit for the space saver spare I have. Long shot, but does anyone in the Midlands area have a 211-compatible 16" wheel (8Jx16 ET36 or 7½Jx16 ET42) and tyre (225/55) I could borrow for a couple of weeks please? Don't care what the tyre is so long as it's legal. Would be willing to donate a few quid to cover tyre wear, although I'd be doing only 20 miles or so, I'd imagine — no burnouts! Alternatively, a full set of 17s (ET38 with 245/45s) would work too, but be less good for pinpointing the problem wheel! All offers gratefully received!