I have Goodyear SS & CSC7 on my GS250. Exactly as what Tong Ge says . . . SS is definitely more sporty and connected to the road. Dry grip is slightly lower than CSC7. Abit rough on road imperfections but I like it....much more fun. CSC7 overall a better tyre but somehow feels vague not sure what the tyres are doing especially when you use on the front.