![Bought a set of 28c Continental Grand Prix 4000S II tyres exactly 1 year ago from Wiggle, they're already cracking. Is this normal, and how do I avoid this in the future? : Bought a set of 28c Continental Grand Prix 4000S II tyres exactly 1 year ago from Wiggle, they're already cracking. Is this normal, and how do I avoid this in the future? :](https://preview.redd.it/my6xmpzttsq41.jpg?auto=webp&s=c195cabb75a5d54281bb1839d9095ed71c3a74be)
Bought a set of 28c Continental Grand Prix 4000S II tyres exactly 1 year ago from Wiggle, they're already cracking. Is this normal, and how do I avoid this in the future? :
![Continental Grand Prix 4000S II Folding Road Tyre & Tube Twin Pack - Black - 700c x 23mm | ProBikeKit.com Continental Grand Prix 4000S II Folding Road Tyre & Tube Twin Pack - Black - 700c x 23mm | ProBikeKit.com](https://static.thcdn.com/images/large/original/productimg/960/960/11173765-3894329358910784.jpg)
Continental Grand Prix 4000S II Folding Road Tyre & Tube Twin Pack - Black - 700c x 23mm | ProBikeKit.com
![Amazon.com : Continental GP 4000S II Bike Tire, Black, 28-Inch x 22mm : Bike Tires : Sports & Outdoors Amazon.com : Continental GP 4000S II Bike Tire, Black, 28-Inch x 22mm : Bike Tires : Sports & Outdoors](https://m.media-amazon.com/images/I/61U42j2P9HL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : Continental GP 4000S II Bike Tire, Black, 28-Inch x 22mm : Bike Tires : Sports & Outdoors
![Continental Grand Prix 4000s Ii 700x25c 28c Road Bicycle Folding Tires Bike Tire - Bicycle Tires - AliExpress Continental Grand Prix 4000s Ii 700x25c 28c Road Bicycle Folding Tires Bike Tire - Bicycle Tires - AliExpress](https://ae01.alicdn.com/kf/Hbcfc7bd5451d4effa0bdb0c22d135321Y/Continental-Grand-Prix-4000S-II-700X25c-28c-Road-Bicycle-Folding-Tires-Bike-Tire.jpg)
Continental Grand Prix 4000s Ii 700x25c 28c Road Bicycle Folding Tires Bike Tire - Bicycle Tires - AliExpress
![Continental Grand Prix 4000 S II Tire 700x25 Black Folding Bead and Black Chili Rubber - Retro City Cycles Continental Grand Prix 4000 S II Tire 700x25 Black Folding Bead and Black Chili Rubber - Retro City Cycles](https://cdn.shoplightspeed.com/shops/617129/files/34779965/1652x1652x2/continental-grand-prix-4000-s-ii-tire-700x25-black.jpg)
Continental Grand Prix 4000 S II Tire 700x25 Black Folding Bead and Black Chili Rubber - Retro City Cycles
![Continental Grand Prix 4000 S Ii Folding Tire 700x23c Road Bike Tire+freeshipping - Bicycle Tires - AliExpress Continental Grand Prix 4000 S Ii Folding Tire 700x23c Road Bike Tire+freeshipping - Bicycle Tires - AliExpress](https://ae01.alicdn.com/kf/UTB8bIkDv3QydeJk43PUq6AyQpXaa/Continental-Grand-Prix-4000-S-II-Folding-Tire-700x23c-Road-Bike-Tire-Freeshipping.jpg)