Rob, tyre wear was heavy tbh but they didn't use the large grass area in the centre of the track due to it being to wet. When we are able to use that part on sunny summer evenings (fingers crossed) it should cut down on having to use as much tarmac.
Its never going to be ideal from a tyre wear point of view but it is ideal for a bit of mid week practice.
PS nice one for the shell, looks all good mate