I am using stock tyres. initially had tyre pressure at 36 psi (as per Wagon R manual) but noticed the maximum recommended tyre pressure mentioned on tyres (General Tyres) is 35 psi. so reduced it to 34 psi.
On 36 psi the tyres were hard and there was sound and mild vibrations above 100 km/h on motorway. after reducing the pressure to 34 felt no vibration and the drive was smooth at 120 km/h on motorway.
was returning to Islamabad from Lahore yesterday night. was in the middle lane at around 110 km/h speed suddenly noticed a dog standing very calmly in the middle of the lane facing towards the other side. Was a close call but am really impressed with handling and performance of Wagon R. It handled the situation (abrupt & sharp turn at high speed while applying brakes hard) very well.
Alhamdullilah, Allah prevented any mishap and got out scratch less.