Continental TKC 70 Rocks Rear Tyre 170/60R-17 M/C 72S TubelessTKC 70 Rocks your perfect rear tire addition for more off road rides. The TKC 70 Rocks is fast becoming the choice for big adventure bike riders who want a rear tire that can perform equally well on and off the road. Jeff Reid explains why the TKC 70 Rocks is the tire you've been looking for. Why choose this tire A standard TKC 70 front tire can be combined with a more aggressive off road oriented TKC 70 Rocks rear tire profile. More off road traction