front end bounce

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Sep 7, 2007 | 11:11 PM

northwestsuperduty

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front end bounce

the front end of my 2004 f250 will start to bounce when i am going between 60km/h and 70km/h i was just woundering if this is normal or if the mechanic is lying to me

Sep 8, 2007 | 02:54 AM

Storm

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From: Neptune Beach, FL

I get it between 40-50mph with my BFG's.. I've been told it's just Wheel Hop..

Sep 8, 2007 | 08:09 PM

ReAX

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From: Central Florida

No, you have an issue that you need to look at. My SD is smooth as fast as I care to go, well over 70mph. First thing I would try is swapping out the shocks for bilstiens, even if they don't fix the bounce it will make for a better ride. Second, I would play musical tires until you find one or two that is out of round or warped.

Sep 8, 2007 | 10:58 PM

Storm

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From: Neptune Beach, FL

Hmm odd.. I never had the issues until I put on the BFG's.. My Bridgestone Duelers were just fine..

Looks like I'll be flipping tires then..

Sep 8, 2007 | 11:27 PM

ReAX

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From: Central Florida

You might also want to have them road force balanced. I am not completely sure of how it works, but it appears to put a load on the tires during balancing so it can account for some deformation.

Sep 8, 2007 | 11:32 PM

Storm

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From: Neptune Beach, FL

Now I'm wondering if thats what it causing my wicked front end vib at 60-70mph.. I thought it was my driveline not shimmed right.. Grr tires are pain in the rear!

Sep 8, 2007 | 11:45 PM

ReAX

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From: Central Florida

It could also be the alignment. with the lift, you need an intelligent mechanic to arrange the caster, camber and toe-in. Stock spec's don't work, and guess work isn't much better. A minor bit off amplifies at speed, then add an out of round tire and you end up with a very difficult time diagnosing your problem. However, check the tires out first.