my 2007 e90 325d has a problem with the tyre pressure sensor. i have made sure the re pressure is correct about 100 times and i have reset the light on the dash but as soon as i drive 5 meters the light comes on again.

i guess there is a problem with one of the sensors? is there any way i can find out which sensor has the problem?

the problem started when i had the rear tyres changes the car was ok for about 5 miles then the light came on and still comes back on when i reset the light. i changes the rear tyres to non runflats but i told its ok to do that although BMW dont advise it.

any help appreciated