Sep 13, 2017
Thank you for your enquiry.
It is possible to fit an innertube into some Radial tyres, although we do not recommend fitting a tube into a ZR marked Radial tubeless tyre.
Metzeler produces a full range of tubes for use, and you should always use a Metzeler tube with a Metzeler tyre, as these combinations will have been extensively tested.
If you contact your nearest tyre retailer, they will be able to recommend the tube to match your tyre.