@pwuser149281374885,
Do I need to decrease the tire pressure in all 4 tires?
OR are there any tires or brakes heat up issues?
As I will be driving for 11-12 hrs with 4 adults and luggage.
I have Continental EcoContiContact 3 175/65 R14 installed in my car.
Usually, I keep tire pressue 33-34 in all four tires.