guys, thanks to a Herts pothole, I had a crack on the inside of my 19"'s. Had this repaired to a great standard by Himen Engineering in Edgware. However, as the wheel was run on the flat for a very very short period, there was some build up of rubber granules inside the tyre indicating the rim had rubbed. No visible damage so do I need to replace? Tyre place said yes, but just wanted some thoughts before splashing out..