Running 42 psi on all four tyres. Vehicle is an estate car (Toyota Avensis), Quatrac 5 all season tyres 205/55 R16 tires. Toyota recommends 40 psi front and 42 psi rear for fully loaded and speeds above 100 mph. At least anything else for that car/ tyre/ load results in uneven tire wear. Try to find the right pressure for your tire and setup. There is not such a thing like "one solution" fits all when it comes to tire pressure. In case of doubt take your vehicle manufacturers recommendation - and if only a single pressure is stated just add 0.5 bar. Otherwise take the fully loaded pressure.
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