I'm also trying to choose a replacement 15" tyre. Went from T1R to Yoko AD08R last time which was an improvement, both 195/50 and clear the wings and stays by a few mm. I do some track days so looking at semi slicks this time, R888R are the front runners as I've driven a car with them on and really liked them. I am intrigued by the Zestino Gredge 07RS soft compound https://www.demon-tweeks.com/uk/zestino-gredge-semi-slick-tyres-2012154/ Nankang NS-2Rs are also on my shortlist as I've heard a few positive reports, the AR-1 seems a little extreme maybe for when I get caught in heavy rain.