When should the KO2 get replaced?

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Fireguy144

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I have 50K on original KO2's. Noisy. Not much wet traction. No crawling on them. If I can get around Chicago this fall, will replace them in the spring. Otherwise earlier!
Hello ...
I was curious as to what PSI everyone was running there KO2 at. My truck is fairly new and I run them at 38 psi ... is that OK??
 

Donovan

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Regardless of the mileage...

When the tread is gone, replace them. And yes the noise increases when the tread lowers, and its very noticable now; for me at least.
 
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My last set lasted 20k. If you off road them at all they come apart. My gen 1 had better life 37k on the originals. Gen 2 just eats them.
 
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