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Old 04-10-2010, 10:23 AM   #1 (permalink)
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Question Flat Spot Hell on Rockers

So I was really stupid and let my 42x15x16.5 Rockers on 8-bolt H1's sit at 0-5 lb of pressure for probably a month back in December. They flat spotted so bad you could see it and they will not go away. I have not been able to drive it on road since then (and not had a chance for off road) and am starting to get extremely irritated. They are so bad that when the flat spots are in sync, you feel like you are on a pogo stick, and when they get out of sync, you feel like the rig is about flip off the road. I have not gotten it above about 20 mph cause I feel like I'm going to die.

So far I have tried driving it around the neighborhood for about 10-20 min each trip at 10 psi, 20 psi, and finally 25 psi. I let it sit on jackstands at 25 psi for about 2 weeks just recently, and they WILL NOT GO AWAY!

What can I do beside replace them?!?!?!?
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Old 04-11-2010, 01:16 PM   #2 (permalink)
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You're going to have to drive them to get the tires to heat up and round back into shape.
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Old 04-11-2010, 01:24 PM   #3 (permalink)
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I would air them up to the posted max psi and drive them around the hood.
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Old 04-11-2010, 02:14 PM   #4 (permalink)
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I would air them up to the posted max psi and drive them around the hood.
This is good advice, and next time you park, max out the air pressure.
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Old 04-11-2010, 05:51 PM   #5 (permalink)
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Air them up & ride em on the road, they will go round as soon as they warm up a little, they wiil be just fine. Don't leave sitting deflated, leave 15-20' of air in them
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Old 04-11-2010, 06:05 PM   #6 (permalink)
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Old 04-12-2010, 06:10 PM   #7 (permalink)
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tires build heat faster at a lower psi so id drive on them at a lower psi untill they begin to warm up
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Old 04-12-2010, 07:10 PM   #8 (permalink)
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tires heat better when you can drive on them. max the air and go find a freeway. lots of heavy brakeing and accelerating on the way there.

if you can't get above 20 then you aren't gunna ever get them back.
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Old 04-12-2010, 10:54 PM   #9 (permalink)
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tires build heat faster at a lower psi so id drive on them at a lower psi untill they begin to warm up
Tires build heat at low psi and higher speeds. He already tried to warm them up at low speeds. He needs max psi to force the tire to be as round as it can and the get the heat built up.
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Old 04-13-2010, 05:26 AM   #10 (permalink)
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Should trade me your headache for some new 38.5 boggers.
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Old 04-13-2010, 09:59 AM   #11 (permalink)
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Yep, inflate and drive around get them warm so they get round again. Store on jackstands or keep them inflated to keep them round.
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Old 04-13-2010, 03:46 PM   #12 (permalink)
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This reminds me.... I need to air up mine from 5psi, Thanks!
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Old 04-13-2010, 03:58 PM   #13 (permalink)
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X2 Fawk! Haha, goin to the yard now to air up and jack up!
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Old 04-14-2010, 06:37 PM   #14 (permalink)
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wouldn't driving them at low pressure get them hot faster
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Old 04-14-2010, 08:32 PM   #15 (permalink)
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wouldn't driving them at low pressure get them hot faster
Miss a line??

Quote:
Originally Posted by toyjeep73 View Post
So I was really stupid and let my 42x15x16.5 Rockers on 8-bolt H1's sit at 0-5 lb of pressure for probably a month back in December. They flat spotted so bad you could see it and they will not go away. I have not been able to drive it on road since then (and not had a chance for off road) and am starting to get extremely irritated. They are so bad that when the flat spots are in sync, you feel like you are on a pogo stick, and when they get out of sync, you feel like the rig is about flip off the road. I have not gotten it above about 20 mph cause I feel like I'm going to die.

So far I have tried driving it around the neighborhood for about 10-20 min each trip at 10 psi, 20 psi, and finally 25 psi. I let it sit on jackstands at 25 psi for about 2 weeks just recently, and they WILL NOT GO AWAY!

What can I do beside replace them?!?!?!?
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Old 04-15-2010, 07:31 PM   #16 (permalink)
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I bought some 37 inch super swamprs that sat for a year or so and ther was multiple flat spots. but driving it for about a week seemed to get them round again it was not a very fun week though!!!
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Old 04-20-2010, 04:17 AM   #17 (permalink)
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Did a 40 mile trail ride this past weekend, by the end of it I could get up to speed and all seems to be better. I wil not be leaving them for looooong periods of time with loooow pressure again.
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Old 04-20-2010, 10:26 AM   #18 (permalink)
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Good to know its sorting itself out. Thanks for checking back in and letting us know.
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