Onza citius mtb tyrewhen the conditions are dry and the courses dusty and blisteringly fast rolling resistance is a decisive factor in downhill racing to ensure our team riders can reach their maximum speeds onza tyre citius is the perfect tyre choice this tyre is designed for dry shallow depth surfaces the citius latin for faster features densely packed knobs throughout its centre section for fast rolling performance the tread on the tyres shoulder offers plenty of traction to stick