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Tried new road tires (Specialized Turbo Pro) 28mm with BBB inner tubes on my Gravel bike. No marks on the tire, at least not one I can spot. But inner tube has
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Silca Latex Inner Tube w/Extender and Speed Shield - Fort Wayne Outfitters & Bike Depot | Fort Wayne, IN
![28mm Road Tyres on a Giant TCR Disc 2019 // Do They Fit? // Continental GP5000 28mm Clincher Tests! - YouTube 28mm Road Tyres on a Giant TCR Disc 2019 // Do They Fit? // Continental GP5000 28mm Clincher Tests! - YouTube](https://i.ytimg.com/vi/t7S6LDCJWKI/maxresdefault.jpg)
28mm Road Tyres on a Giant TCR Disc 2019 // Do They Fit? // Continental GP5000 28mm Clincher Tests! - YouTube
![Amazon.com : Cycle Factor 700c 23/28mm Width Presta Valve 48mm Innertube with Removable Valve core and kit (2-Pack w/tire levers and core Remover kit) : Sports & Outdoors Amazon.com : Cycle Factor 700c 23/28mm Width Presta Valve 48mm Innertube with Removable Valve core and kit (2-Pack w/tire levers and core Remover kit) : Sports & Outdoors](https://m.media-amazon.com/images/I/813XzaqhaWL._AC_UF1000,1000_QL80_.jpg)