I have just gone to check the tyre pressures on the V70 and see the normal settings for front and rear which work out at 2.2 BAR front (32 psi), and 2.1 BAR rear (about 30 / 31 psi), but also a column for 'ECO' which dictates 2.6 BAR front and rear (38 psi).
I understand of course that the 'eco' levels probably mean less rolling resistance and so better fuel economy, but would that not mean less grip, and probably not be a sensible level to have the tyres pumped up to in the winter? 38 psi for a car tyre does seem rather high....
I have never seen the choice before and wonder what the forum think.
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Question re: Tyre pressures - 'Eco' v. no.. 
Question re: Tyre pressures - 'Eco' v. n.. 