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2Pak Continental Grand Prix GP 5000 700 x 25 IMPROVED GP 4000s ii Road Bike Tire 4019238007824 | eBay
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![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?width=640&crop=smart&auto=webp&s=d07053f183687fe5f700b2c726780866a3d6d10c)
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? :
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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 Grand Prix 4000s Tires Clincher user reviews : 4.1 out of 5 - 102 reviews - roadbikereview.com
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