I bought a Ford Mondeo from a local car dealer eight days ago for £10k. It is due to go back tomorrow to have an alloy wheel repaired. When I looked today I could not find the security nut and do not believe it has been supplied.

Also, during my search for the nut I noticed that the spare tyre supplied is a R16x215mm whereas the car is fitted with R18x235mm tyres. Presumably this would be illegal to use in an emergency.

I have spoken to the dealer who say I will have to pay for both the security nut and change of tyre/wheel. I do not think this is fair - am I entitled to return the car tomorrow and insist on a full refund?