DT Swiss GR 1600 SPLINE disc brake wheel clincher 25x24mm 700c MICRO SPLINE rear offroadWhen cycling tips reviewed the original gr 1600's they said that ""never in the past 18 months did these things ever feel less than amazing whenever i put them on a bike""since then the dt's alloy gravel range has built an enviable reputation for superlative ride quality and bombproof backcountry reliability24 mm inner width has proven itself the goldilocks dimension for gravel, narrow enough for running higher pressure road slicks but wide enough to take nice supple 47c's for when you want to go off-gridthe gr's 350 hubs have now been upgraded to the 36-tooth sl ratchets, giving a great balance between engagement, low noise, minimal drag and long term dependability, especially in poor conditionsthe swiss-made DT ratchet system remains the gold standard for reliability, low-weight and ease of servicing, which is why it's relied upon everywhere from the tour de france to the world cup downhill circui