WTB spare 31 or 32 tire

[Red97XJ]

I am looking for ONE spare tire. Right now I have 4 32x11.5x15 GY MTR's. I am looking for a 31 or ideally 32 that has an aggressive tread.... maybe any mud Terrain. I am only putting this tire on the roof, if I use it ever, it will be to just get me off the trail. Need not be nice.

I live in Northern Indiana. Hoping cheap/free plus shipping. Don't need a rim.

Thanks,
Jason