Taken from Sheffield website this morning
"..the meeting was abandoned after ten races due to ‘an insufficient number of tyres to complete the meeting’"
"But at the end of the day rider safety is paramount and regardless of the number of tyres, it wasn’t safe to continue anyway"
The track for the Friday was rubbish and the racing was very poor. The food/drink stalls inside the stadium sold out of everything early leaving lots of hungry/thirsty fans.