I have a Zetec 1.6TDCi, with factory fitted optional extra 7 spoke 16" alloys, or to be more precise 195/45 r16 86v.

The standard inflation chart on the internet when I enter my reg no with the standard wheels (195/50/v15) says the pressure should be 30 psi all round. The plate thing on the inside of the ns door state 195/45 r16, 31psi all round, However it also states 1.6 Diesel, 33 psi all round. Would this plate be specific to my car with the option added or standard? I have also read that you should use the standrd pressure recommended for your vehilce, which would therefore be 30psi all round.

Anyone any idea what is the correct prssure???

I just go by what it says in the manual, if you have a flick through it lists all the engine types and correct tyre pressure for normal, and fully loaded, front and rear. Tyres can hold a lot more air than the recommended levels though, and the difference between 30psi and 31psi shouldn't be noticeable.

My plate shows 33psi front and 26psi rear. 1.6 TDCi with 16 inch 7 spokers. Same in the manual.

Thanks merlin, will go along with that

My Zetec S TDCi suggests 31 at the front and 26 at the rear under light load. The plate in the door states 31 front rear. I go with 30 in the back as 26 sounds low, especially when it suggests 43 under load.

It laughable frankly....how hard can it be to be consistent?

1 or 2 PSI can hardlly make any difference I suppose