Hoping for useful feedback. I picked up my new Cupra ST300 in November on the brink of Swedish winter, and immediately switched to friction tyres 225/40 x 18. Ran them ever since with around 2.5/2.6 bars, and noise levels were pretty normal. Now, the other day I could finally bring the summers on. They are Continental ContiSportContact (gen 5 or 6, I presume) in 235/35 x 19, as delivered from factory. And noise levels went UP around 30 per cent!!! Never experienced that with any of my previous cars. Virtually the same tyre pressure, and not much difference in profile (9.0 cm to 8.225 cm). So I'm wondering if anyone else has experienced this. I reckon they're pretty hard, with low rolling resistance, but the noise is unbearable! It wasn't like this with my previous ST290, that had an older gen Conti tyre.