I had been to Tirupathi about a month back, went via Tiruvallur & came back via Tada. The stretch between Puttur & Renigunta had some potholes. The stretch between Tiruttani & Puttur was the best in the entire distance. While returning I opted to come via Kalahasti, Tada and had good roads all through. Would suggest going via Tada, Kalahasti as compared to one via Puttur |