Tune launches lightweight gravel wheels for big tyres and big riders

German lightweight component specialist Tune has unveiled a new gravel wheelset called the Nano Gravel 45. The new wheels have a 45mm-deep aero carbon rim with a huge hooked 30mm inner width. German lightweight component specialist Tune has unveiled a new gravel wheelset called the Nano Gravel 45. The new wheels have a 45mm-deep aero carbon rim with a huge hooked 30mm inner width. Tune says it wanted the Nano Gravel 45 to be as versatile ... [2241 chars] Originally reported by BikeRadar. Read the full story at the original source for complete details and analysis.