Over 40K on tires with heavy highway driving. Great ride, handling, stopping effectiveness. Experienced uneven inside wear that cannot be explained. One tire only even though rotated side to side only.
315/35/20 at the back and 275/40/20 in front. Quieter, softer ride and comparable handling to the runflats they are replacing. Good dry and wet tyres. Don't know anything about snow here in Johannesburg South Africa. Genuinely impressed. I could not get more than 30000km from any of the runflats. With 10000km done, there's 90% life left on the tyre. At 20000km I'm going to swop them from one side to the other to even out the tyre wear.