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When is it time for a new tire?

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When is it time for a new tire?

Old 01-29-18, 11:55 AM
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When is it time for a new tire?

Testing the tread depth on a car tire with a penny or quarter is well known as is looking for "wear bars." Since I don't have wear bars on my fat tire, what depth of tread is a good indicator that it is time to replace the tire?
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Old 01-29-18, 12:04 PM
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As soon as I can "see through" to any cotton or bias-ply material, or when there's any significant tear or rip, I'm getting a new one. Tire condition is a major safety factor. Not a category for "being economical" in my book.
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Old 01-29-18, 12:11 PM
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You will know. Got tread left and still holding air work for me.
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Old 01-29-18, 03:53 PM
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Yeah... I guess what I'm really asking is "what is the minimum tread depth where the tire is still effective?" I'm pretty sure 1/16th of an inch of tread is going to have me sliding around on snow like a slick. At what point are the knobs too small to be useful?
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Old 01-29-18, 04:09 PM
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My guess is it is application dependent.

So, I have semi-slick fatties on my cargo bike, and intend to run it down to the threads (or the tire cracks, whichever comes first).

Your snow (or certain mud applications) may be different, and perhaps the same thing that MTB users, or even motocross users run into.

I assume the nubs also wear quicker in the middle than the edges, so your tires won't be completely smooth.

So, replace the tire when you feel you need it for your application, or perhaps when you've worn down the middle of the tread smooth (still with taller nubs on the edges).
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Old 01-30-18, 12:43 PM
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are both the front & rear wearing the same? if not, maybe you can buy some time by swapping them?
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Old 01-30-18, 03:05 PM
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When you start crashing/falling it's time. Not going to find some chart or gauge.
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