The onza ibex 275 x 240 folding tyre is known for fast smooth and safe locomotion in mountainous terrain thanks to its wide open tread you do not need to compromise on either loose gravel or in the wet conditions onza has used their rc2 compound which is a mixture of 2 compounds the centre of the tyre has a 65a compound which have great for rolling resistance and the life of the tyre the shoulder have a 55a compound which is slightly softer giving you grip and in the corners in all con