I'VE just replaced all four tyres on my TS Magna V6 Sedan. The tyre people told me that 36 psi is the recommended pressure for Australian roads and this would prevent the tyre edges wearing. I thought that was too high and would result in a hard ride and that not all of the tyre footprint would be in contact with the road. Four years ago these same people recommended I run 32 psi, which I've always done and have had no problems with handling, wear or performance.
MANY tyre people and defensive driving instructors recommend you run a higher pressure than shown on a car's tyre placard. As you say, it makes the ride harder, but the handling is better, the steering more responsive and fuel economy improved. I wouldn't go any higher than 36 psi.
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