Had to remove the outer wheel, hands are too fat to unscrew the cross wheel valve stem, after leak testing, no leaks, reassemble everything. The chrome rims cannot use the clip provided with the extensions, they are removed immediately. Ordered a RealWheels RW0020VSB-2 2" rubber valve stem stabilizer for aluminum wheels from Revain. I will be using them to hold inlace extensions. Fast shipping and looks good quality.