Hi . Bought ss125 gladii at 2011 Oct. Chosen after gaining lot of knowledge from sources and also from mouth shut. So far 38000km done. Good mileage of 55-60 even 62sometimes. Mileage and performance depends on how u care about your bike. Servicing at correct time is not I m going to say. But I will change engine oil at every 1500. Will wash once in a month. I was a student at that time. Usually bike will be going with 3persons. Never faced any issues on road till now. My priority was performance and comfort and mileage respectively. It fitted a lot. Though this model is discontinued loving it very much. No the bike will not vibrate before 70kmph. If ur going for shins I bet u it ll vibrate at 40km itself.