When I bought my brand new Suzuki Wagon R VXL last year I didn’t like the thin profile stock tires General Euro Tycoon 145/80/R13. Before replacing the tires I checked with the Suzuki dealership & they confirmed that the Warranty will be valid. (I assume the only exception is if there is some damage as a direct consequence of the tire change).
I replaced the same with Dunlop SP Touring T1 tires, size 175/70/R13 .In my view this size is the best for the stock rims. This profile of tire not only improves the appearance of the car but also results in smooth ride, better handling and braking performance.