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Wheel hop?

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Old Jan 23, 2008 | 03:54 PM
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Wheel hop?

I just got some new toyo a/t 315/75/16's on my 2004 F350 4wd. All seems well except at 40 mph, the whole truck feels like its going over wavy pavement. When I look in the rear view mirror, it SEEMS like the back is bouncing more than the front. Is this just a balancing issue?
 
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Old Jan 23, 2008 | 04:06 PM
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What for pressures are you running in the tires? Maybe lower rear pressure a bit?
 
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Old Jan 23, 2008 | 04:10 PM
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Check the air pressure first , then have them recheck the balance .
 
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Old Jan 23, 2008 | 04:29 PM
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they are all at 54 psi.
 
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Old Jan 23, 2008 | 04:33 PM
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I'll lower them to 50 (max pressure per the Toyo website) and see if that helps.
 
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Old Jan 23, 2008 | 06:03 PM
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You could prob. even go lower, I run 45 in front and 40 in back unless towing
 
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Old Jan 23, 2008 | 08:14 PM
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Can you see any signs of a small dot of paint on the sidewall anywhere on either tire? When I got my new tires I notice a small green dot on each tire. Tire store said it was to let the tech know where to mount the tire in relation to the metal valve stem. I guess the stem is just heavy enough to throw the balance out and no tire is perfectly balanced new so the manufacturer tries to counter balance the issue.
 
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Old Jan 29, 2008 | 08:01 AM
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I don't have metal stems. I lowered the air pressure but I still get the hop between 37 and 40 mph.
 
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Old Jan 29, 2008 | 03:21 PM
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I'd take it back to the tire dealer, maybe there's a broken belt in one of the tires? Have them even take it for a ride so they can see for themselves.
 
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