Giant P-SL1 Tire
With their front/rear-specific compounds and high-volume casings, Giant's P-SL1 Tires offer superior speed, handling, and an amazing ride. And, the handy built-in wear indicator lets you know when it's time for new rubber.
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When I purchased my 2012 Giant Defy, it came with Giant's step down from these tires. After numerous flats, I couldn't wait to get the factory tires off the bike and upgrade. So obviously when I bought my 2016 Giant TCR Advanced Pro 1 from Spokes, I really felt the P-SL1 tires were probably going to be a weak spot on the bike. 2000 plus miles later the tires are still going strong and I have never flatted. I would compare them to Michelin Pro tires in terms of speed, handling, and reliability.