Not sure what rig you have, but if it is heavy enough to use the G614's, run them at 110 psi cold, no less than 100 psi cold. We've been running them for over four years now, and have no reason to change, and have never had a failure or flat with about 40,000 miles on them.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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