So I bought some tires for my 2012 Limited and this will be there second summer. I have about 12,000km (7500 miles) on them. There is a TON of tread left but both front and back tires have these small checks/cracks in them. What would you do with them, replace or keep using?

 

I'd contact the manufacturer.

 

I would agree as that tire needs to be replaced. Being H.D. Dunlops, I wouldn't see why any dealer wouldn't take care of this for you.

 

Replace. It's your butt.

Michelin Commanders are much better tires IMHO.