My C3 Aircross auto runs on 17 inch Bridgestone tyres.
I decided to check the tyre pressures as I thought they were a bit soft. The door pillar says 2.5 bar. Using my dial tyre pressure gauge they all registered 2.4 bar when cold, so I used my compressor to top them up to 2.5 bar. Not a lot some will say but in old money it's 1.5psi. after resetting the tyre pressure monitor I took the car for a run on A and B roads. The difference in the ride was significant. Smoother and quieter.
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