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Giant Tubeless Wheelsystem

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Giant Tubeless Wheelsystem

Old 05-16-21, 09:41 AM
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Location: Herndon, VA
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Bikes: Giant OCR C2, Kona Jake the Snake, Scattante 650-R

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Giant Tubeless Wheelsystem

Anyone have experience with the Giant tubeless system? I got a Defy Advanced 2 last year, and rode the whole season with no issues, until a flat late in the season. Couldn't be repaired. The shop that sold the bike didn't have any Giant Gavia Fondo replacement tires in stock, and with the COVID supply-chain issues, installed a Specialized Roubaix tubeless tire instead. It continually lost air (going to flat in less than a week If I wasn't riding), but the Giant tire just needed a top-up each time.

Got it out for a few rides this season, and the same problem, so took it back to the shop to have more sealant put in (to see if that was the issue). Yesterday, hadn't ridden in two weeks, and the tire was again at minimal pressure (Giant front tire was low, but still firm).

Put the front tire up to max pressure on the sidewall (700X32, 75 PSI). The Roubaix tubeless tire said max 80 PSI, so put that to 80. Rode for about 10 miles, when I had a sudden blowout of the rear, which caused me to crash. Fortunately, I'm just a little scraped up and have a sore wrist.....but after reading more, I'm concerned that I'm way over-inflating these tires....and even more concerned that a non-Giant tire is a safety issue.

On the Giant site, it doesn't list the Specialized tire as compatible or incompatible.

On the same, it's saying that the recommended pressure is 57 PSI...it says max is 'the tire pressure on the label', which is 75.

Any experience or pointers? If blowouts like that are a likely hazard, I'd rather go back to tubes.

2020 Giant Defy 2
Fuji Cross Pro
Scattante 650-R trainer bike
'06 Kona Jake the Snake

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