![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? :
![The best road bike tire money can buy – 6 models in Comparison | Page 4 of 7 | GRAN FONDO Cycling Magazine The best road bike tire money can buy – 6 models in Comparison | Page 4 of 7 | GRAN FONDO Cycling Magazine](https://granfondo-cycling.com/wp-content/uploads/sites/3/2019/09/GF-Rennrad-Road-Bike-Reifen-Tire-Test-2019-009-1140x760.jpg)
The best road bike tire money can buy – 6 models in Comparison | Page 4 of 7 | GRAN FONDO Cycling Magazine
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Continental GP 4000s II Folding Road Tire 700x25c Black Grand Prix GP4000 S II (SET OF TWO TIRES) - Walmart.com
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Continental Grand Prix 4000 S Ii Folding Tire 700x23c Road Bike Tire+freeshipping - Bicycle Tires - AliExpress
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Continental Bike Tires Grand Prix 4000 | Continental Bike Tires Grand Prix 5000 - Bicycle Tires - Aliexpress
![Continental Grand Prix 4000 S II (650c, Folding) - The Bicycle Chain & Clean Machine | North Carolina's Best Bike Shops Continental Grand Prix 4000 S II (650c, Folding) - The Bicycle Chain & Clean Machine | North Carolina's Best Bike Shops](https://www.sefiles.net/images/library/zoom/continental-grand-prix-4000-s-ii-650c-folding-copy-202442-1.jpg)