Hummm... Let me see...:call me silly- but what are the complaints about the stock goodyear tire?
yeah-i am shaving tread off learning the clutch/throttle and not having driving a stick in 15 years or more......
but - whats the complaint w/the tires?
Too much impact harshness combined with too much sidewalk flex when cornering, tread design and compound optimized for low-noise, all-season use (meaning it's neither great on dry pavement nor rain or snow...).
Any high-perf summer tire of the same size, even the lowest rated brand, will head'n shoulder outperform the Koup SX OEM Goodyear LS all-season donuts on dry or wet pavement (even more so if you go to 18inchers..). And we haven't talked about subjective stuff like turn-in response and behavior/feedback at or near the limit of adhesion...