I have conti gatorskin 25c on my road bike and in this weather no matter how careful I am there is always the possibility of slipping....I try to be so careful of leaves, drains, mancovers etc but tonight yet again i felt some slippage on my back tyre when riding slowly over a drainage cover..and not the smooth type...the question is if i buy marathon + tyres will it stop me slipping and give me a bit more confidence?