Not sure about 2PSI or half-full of fuel...but 4-up in an Alfa diesel on Cross-Climates makes it understeer onto the grass at Schwedenkreuz, when 1-up doesn'tplenty said:If you're the sort of person who can tell the difference in the way a car handles when it's full of fuel versus half empty, or when you change tyre pressures by 2 psi, you might be able to notice. Most people can't.john-e89 said:I'd thought you might be able to feel the adjustments on the road, but I've never used adjustable ones tbh.
