I've been riding my Moorespeed and other older stuff this past few years and now have a 2015 GSA.I need new tyres and i'll admit I'm behind the times with suitable rubber for it.95% of my riding is 2 up but reasonably speedy.I'm after good grip and stability,mileage isn't primary and neither is winter performance as my mileage tends to be 3 seasons only.What does the gser massive recommend?