I know both tractors and neither had any grinder/ sander or concrete spinning done to them!
The WC tires where worn as nice as you could get but no evidence of Grining Or altering these tires were found!
The BN tires are round on the front leading edge and road worn from being on the front of a 4wd tractor and the teck comeitte looked at both of them determined they were okay looked at another tractor who's tires had Grinder marks and was removed from Its class!
I'm sure that The pull could use Help and if you're good at judging tires and up on tractors you should be on the committee to help!
As with any PUll all help is appreciated!