Based on your need for a single tyre, I would recommend either the Harley Davidson Dunlop D408 130 60B19 Front Tire for R3,846 or the Harley Davidson Michelin Scorcher 11 Tire Series- 140 75R-17 Blackwall- 17 In. Front for R4,502. Both of these options are for front tyres, so they are a good single replacement if your front tyre is worn down. The Dunlop option is more affordable, but the Michelin is a higher performance tyre if your riding prioritizes handling and grip. Let me know if you need any other details on sizing or the differences between these tyres. I'm happy to provide more information to help you make your choice.