Incorporates ramped knobs for low rolling resistance and channel-cut knobs to increase gripping edges, giving straight-line control and precise cornering 3C Maxx Terra is softer and offers more traction than 3C Maxx Speed, yet provides better treadwear and less rolling resistance than Maxx Grip EXO equipped models feature Maxxis` EXO sidewall protection which help prevent puncture from sidewall abrasions TR - Tubeless Ready - sealant required Tubeless 27.5x2.8 584 TBLS - Fold Bk/Blk 35 980 120 TERRA/EXO/TR NoUPC/EAN/GTIN: 4717784031880