gookah said:Flat tyre thats why it's creaking, looks uneven and has no pressure reading, And the ticking will be the screw or nail that has caused it. Gauge is working on 3 tyres so if it says no pressure in 4th then that is because...... Well there is no pressure :headbang:
Won't look flat if it's a run flat, also someone has possibly reset light with one flat tyre so will read correct now
Not sure about the tyre pressure sensor because as soon as driven the rotaion of the flat would be different to the other side so trip the abs sensor and thus the tyre pressure light come on again
Def a flat to check out and fix first and if driven on for any distance will need a new tyre.