00:16:33MAE Bikr
Does GCN have it right about TPU tubes?
MAE Bikr
March 24, 2026
Description
GCN had done an video on the problems with TPU tubes. Consumer level testing can either prove or disprove their claims.
https://www.youtube.com/watch?v=xXvL7RC0RMs&t=1s
TubesRideNow TPU Bike Inner Tube 700C X18 23 25 28 32 35 37 40C MTB Gravel Ultralight Bicycle Tire 26 /27.5 /29 Inch with Patch Kit
Created: February 02, 2025The reviewer tests RideNow TPU tubes to challenge GCN's claims about TPU tube characteristics. He finds that while TPU tubes are not completely inelastic, they do not fully recover their original shape after inflation, making reuse in smaller tires difficult. He recommends using fresh tubes for flats and patching them later with proper patch kits like Park GP-2.
AI-Summary
Pros
- Metal valve stems available (unlike plastic ones that can leak)
- Can be patched successfully with proper patch kits like Park GP-2
- No issues with phantom punctures when using higher quality tubes
- Heavier weight TPU tubes (40-45g) can mitigate heat issues with rim brakes
Cons
- Plastic valve stems can develop leaks at the bonded joint over time
- TPU tubes do not fully recover their original shape after inflation
- Reusing TPU tubes in smaller tires (even within manufacturer range) is difficult
- Cheap TPU tubes may have more issues with phantom punctures
- Potential heat issues with rim brakes on carbon rims during prolonged descents
MyBikeParts
aliexpress.com#3256806774308080Affiliate · MyBikeParts
🇺🇸$7.28
Checked about 1 year ago