According to Tyres.co.uk, the Michelin Primacy 4 S and the Continental PremiumContact 6 are two tyres available for 19-inch factory wheels on Hyundai Tucson Hybrid models. Check your Hyundai Tucson placard or registration for other years/trims/wheels for fitments that differ.
Please check the label on the driver side door as well as the centre pillar for more information. The label includes the original equipment tyre specification and the recommended tyre pressure. The size of your Hyundai Tucson tyre is also stamped on the sidewall.
In most cases, you will not have to buy four new tyres. Buy two, install them as a pair, and replace the other two as a pair on the same axle. For all four wheel drive Hyundai Tucsons, all four replacement tyre must match in size, type, tread pattern, brand, and load index. When replacing only two tyres, these must go on the rear axle in compliance with UK standards for tyre safety.