Originally picked these up in summer 2014 for about £120 per corner, on the recommendation of a friend in the motor trade. Upon fitting, the difference between them and the previous tires (Continentals with about 16k on them) was staggering. Quieter, better fuel economy, improved grip in both the wet and the dry, you name it and the Hankook Ventus ST beats the Contis hands down.
We've taken our car across France on the autoroutes at speeds that English police would claim is unsafe, and the Hankooks provide everything you could possibly want when driving a fast, heavy, expensive car. Great grip, precise handling, slow to wear down, surefooted in heavy rain. Really impressive tire in every way. Whilst my other half drives like Morgan Freeman in a heartwarming movie, I like to squeeze every last ounce of performance out of the car - the tires take a beating when I drive, and they have stood up admirably to everything I have thrown at them.
Fast forward to autumn 2018 and having done 40,000 miles we finally need to replace two of the four, because they are down to about 3mm. A bit of research demonstrates that although the price has risen to £157 per corner, the Ventus ST is still the best value tire out there for the Range Rover Sport. Pirelli alternatives are more expensive but no better, Continentals are more expensive and distinctly worse. Bridgestone Duelers are far more expensive and arguably worse than the Contis, so that only leaves Michelin as a viable alternative... and they start at over £200 per tire.
The Ventus ST isn't fabulous off-road. Wet grass is no particular problem, nor is gravel or shallow mud. When you start splashing around in deep mud however, you are going to find that there is a limit. It's miles better than the Bridgestone Dueler (we have these fitted to a Toyota Hilux and they are complete rubbish), but that's not exactly a benchmark!
A final mention regarding snow performance: living in southern England means we very rarely see any snow, so I can't really say how the Ventus ST performs in that regard.
All in all, I simply don't understand why these tires aren't fitted as the default option coming out of the factory. The quite simply urinate all over the opposition.