25c tubes, 28c tires?
06-24-20, 12:35 PM
#1
Senior Member
Thread Starter
Join Date: Sep 2014
Location: Northeastern MA, USA
Posts: 1,678
Bikes: Garmin/Tacx Bike Smart
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 646 Post(s)
Liked 289 Times
in
191 Posts
25c tubes, 28c tires?
This may be a stupid question, but any harm using 25c tubes in 28c tires? Is the tube sizing really that important?
06-24-20, 12:39 PM
#2
Really Old Senior Member
It'll work fine.
Most tubes are marked to fit a range such as 23-25 or 23-25-28 etc.
Putting it into a 35mm tire may be stretching it pretty thin in spots?? A little faster air loss & a tic less flat protection.
Most tubes are marked to fit a range such as 23-25 or 23-25-28 etc.
Putting it into a 35mm tire may be stretching it pretty thin in spots?? A little faster air loss & a tic less flat protection.
06-24-20, 06:56 PM
#3
Senior Member
Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,095
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4210 Post(s)
Liked 3,875 Times
in
2,315 Posts
This is an old BMX trick to slightly lighten the rotating weight. Use a skinnier tube then the tire's profile. The tube will balloon up to fill the space in the tire/rim. If the day to day air loss is too great or the tube flattens with no punctures through the casing you'll know you went too far in the miss matching of widths. Andy
__________________
AndrewRStewart
AndrewRStewart
06-25-20, 06:38 AM
#4
Senior Member
Thread Starter
Join Date: Sep 2014
Location: Northeastern MA, USA
Posts: 1,678
Bikes: Garmin/Tacx Bike Smart
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 646 Post(s)
Liked 289 Times
in
191 Posts
Thanks. I'll just use them and live on the edge. Of more concern to me is that I've mounted my only remaining GP 4000s. Dammit.
