After changing my stock tire to the above size for more than a month, past few days find that the car pick up was a bit slow, especially when moving off in front of the traffic light. This morning b4 coming to work, I went to the petrol station & pump in 225kpa for both the front & rear tire & find that the pick up is much better now. As the car manual only indicated the recommended tire pressure for the stock size 175/65R14 as 210kpa for both the front & rear, so am wondering whether did I pump in the correct pressure or not