Originally Posted by
pieterjan
If you have put on 18" wheels you have to update the ecu that it know's that you have 18" now. Your ford dealer can do this.
your sure?
the old mondeo uses pretty basic electronics and i was told it wasn't possible to change wheel size details?
re mpg, keep an eye on the temp gauge. when upto temp it should sit dead central and hardly ever move. theres a valve on the back of the waterpump which plays up, it's only about £10 and this creates too much flow around the systems when it breaks so the engine never gets upto temp!