Unless I come up with a disc-brake front wheel for £0 she's going to have to stay in the green, which is handy because I bought a pair of 35mm Hypers for her bike anyway but thought I might be able to get her some fast 28s.
28s on 25mm rims is green on my chart. Since the Hypers already roll pretty well, the big gain from getting an actual road race tyre is likely to be aeros and weight.
Unless I come up with a disc-brake front wheel for £0 she's going to have to stay in the green, which is handy because I bought a pair of 35mm Hypers for her bike anyway but thought I might be able to get her some fast 28s.