Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) Put on a new tyres yesterday now its gone flat .

If they have tubeless tyres JohnHarris I would put money on the fitters having damaged seal on one wheel. I managed to damage the seal on two of mine by simply taking up a ¼ turn of slack on a spoke on each, so can verify the seal (formed with sealant) is very fragile if mistreated. This also makes it easy to repair minor damage though using correct sealant available from MWS who supply OE wheels to MMC. See thread here.

Pic below of seal with damaged part dug out ready to receive fresh sealant.