However on greasy roads where the temp is around 1 degrees or less they are dogs. But for summer duty they are the number 1 tyre imo to run everyday.
....The greasy dogs bit is what kills it for me. In the UK, any day can serve you a greasy road. But I can see why one solution is to do what you are doing.
This thread has shown me what I thought: Best to either change all 4 tyres or continue with a pair of GY Asymms. I'll continue with a pair of GY Asymms this time.
The assys, are a good tyre, although they didnt make as much of a differnce to my leon as the GSD3 f1s did to my ibiza. Obviously its hard to compare, but the GSD3' just stuck to the road like glue, but it could be down to the fact that the ibiza weighed around 1100kg and had 205/45/17s as std.
I think the greasy roads in the summer wont hinder the r1rs, however a greasy road when its cold outside does, because you can never carry enough speed to get any heat into the tyres. Although they are dogs in the cold, they are super predictable and communicative so you know where the limits are till the nose starts to push wide.
Jurys out on how long these tyres will last, my f1s usually manage 4000 miles on the front of spirited driving.