I have had problems with leaking valve stem extensions on 2019 Foretravel IH45. The pressure sensors on the valve stem are large and heavy causing vibration on the stem extension for the inside dual wheels. This is cracking the inside valve stem. I found online a rubber centralized that fits over the valve stem and inserts into the hole in the wheel which stops any movement of the valve stem. Hope this will help others who may have experienced the same issue. The rubber centralizers can be purchased on amazon.
Thanks Donwick, That is good idea if you have rubber valve stems.
Do you have pictures, brand or links?
The 2" size worked perfectly on our 22.5" wheels:
Amazon.com: RealWheels RW0020VSB-2 2" Rubber Valve Stem Stabilizer for... (https://www.amazon.com/gp/product/B00WLSYRR6/ref=oh_aui_search_detailpage?ie=UTF8&psc=1)
https://www.youtube.com/watch?v=r9hOnJXBEBc&vl=en
extension stabilizer alcoa wheels (http://beamalarm.com/Documents/extension_stabilizer_alcoa_wheels_23505.html)
Every Foretravel I have worked with came with these inserts from the factory.