My Gravelking SKs now seem to be cracking along the side walls, while the tread looks like it has more life left. Is it normal for side wall to wear before tread? They are 18 months old and have done plenty of off road miles so not too bad I guess.
Sounds like you might've been riding them too low pressure. This puts more strain on the sidewalls. Lots of people running tyre inserts nowadays so they can run lower pressures and one bonus is less impact on sidewalls.
My Gravelking SKs now seem to be cracking along the side walls, while the tread looks like it has more life left. Is it normal for side wall to wear before tread? They are 18 months old and have done plenty of off road miles so not too bad I guess.