I am a newbie in the process of purchasing a 2008 TDCi 140 Titanium X, which has scruffy wheels. What dimensions are the standard wheels. I am struggling to find a definitive online reference. Thank you in advance.

It should tell you on the label at the bottom of the drivers side door pillar or alternatively look on etis with reg or vin no, thirdly inputting the reg to tyre suppliers website will give you the oem size.

If you are asking 'what are the dimensions of the wheels fitted to my car?' (as opposed to what dimension wheels did it have fitted at manufacture, or what were the dimensions of wheels fitted to more basic versions of the Mondeo), then the wheels will have the dimensions printed on them.

I think this is standard, these days, but sometimes the dims (wheel diameter, pan and offset) hide a bit and you often have to take a wheel off to see. Oddly, on steel wheels, the dims are often easier to find than on alloys.

if you asking one of the other questions, or even 'what is the range of wheel sizes fitted to a 2008 Mondeo', then please try to be exact about the question.