Unit uses in gas station usually is "bar", garage or car uses "psi" or "Kpa"
3.0 bar = 43 psi
240 Kpa = 34 psi
43psi = 300Kpa (about 25% over inflated if 3.0bar reading is correct)
so you are now over inflated, tires are more round, center of the tires will be wear irregularly if keep using this psi