How bad is it? Can you post a pic?

 

not too horrible yet. just little cracks right now. but its bad enough I noticed

I'll get pics tomorrow. I'm at work doing a 24 hour shift

 

Oh, only a 24 hour shift?

 

I put Goodyear Wrangler SA's on just after I bought my new 08 Expedition.
They were fantastic in snow, but after 22K miles, they didn't perfom as well in deep snow, so I replaced them recently with the same tires. Old tires still had good tread and would have been acceptable to 35K ot 40K, but not willing to risk getting stuck. These are great tires for year round use in places with heavy snow.
Not happy to replace them this soon, but I consider it safety insurance.

Dealer also told me rear brakes were gone but fronts were fine! Can't figure out how that happens.