The specialized ground control tyre is an exceptionally versatile xc trail tyre specialized have optimized the tread using fe analysis resulting in a tyre that rolls fast and provides an increased grip and traction in all conditions specialized mountain bike tyres are wide with a deep tread for grip when hitting rocks and tree roots the wider and deeper the tread the more grip you get specialized ground control grid tyre features casing 420d1 for 15 improved cut resistance bead