You may expect very chill weather at Babusar top but accessible at that time, For tyres no issue, i had 50K speedometer with same general tyre not a single time issue/puncture at any where during our trip. For crossing Abbottabad agree with babar that you should cross in early morning or if you are night owl then you may follow us as we travelled from Lahore at 6 PM and cross Abbottabad at 11 without empty roads.