5 years seems to be about the life span of the BFG's. I just found the tread separating on one of ours, a 1409 built tire. Ours were bought in 09 and spent the first 2 years under a 9K sob before being put under the Mountaineer in Nov. 2011. Replacing with Bridgestone R250's.
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2018 Silverado 3500 DRW
2011 Montana Mountaineer 285RLD
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