Good vibrations or bad 60+mph harmonics
11-07-2013, 06:45 PM
#41
Junior Member
Join Date: Jul 2013
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
Ghost vibration - temperature dependent?
I have a 2013 FX4 SCREW 5.0L.
10,000K and one of the upgrades was purchase 18" Ford FX2/4 rims and put on 275 65R18 Goodyear Duratrac Load E tires. (awesome looking btw)
Vibrations commenced immediately. Balanced. Still vibrated. Rebalanced. Still vibrating. Road force balanced. Still vibrating at >100kms/hr. Replaced one rim for excessive "warp". Balanced. Still vibrating >100kms/hr. Sometimes much worse than others. No change in speed, load, hill accent or decent, or gear seems to affect the vibration. When the truck vibrates, it vibrates, and the only thing that makes it better is driving below 100kms/hr.
Today, however, temperatures got down to 3-4C (36-38F) today and vibrations are 90% gone until tires warmed up (20-30kms), when the vibrations came back moderately but not as bad as when the ambient air temperature was 11C (~52F)
I would argue that some of the tire compounds might be the reason behind some of these ghostly harmonic vibrations.
Thoughts? Similar stories?
10,000K and one of the upgrades was purchase 18" Ford FX2/4 rims and put on 275 65R18 Goodyear Duratrac Load E tires. (awesome looking btw)
Vibrations commenced immediately. Balanced. Still vibrated. Rebalanced. Still vibrating. Road force balanced. Still vibrating at >100kms/hr. Replaced one rim for excessive "warp". Balanced. Still vibrating >100kms/hr. Sometimes much worse than others. No change in speed, load, hill accent or decent, or gear seems to affect the vibration. When the truck vibrates, it vibrates, and the only thing that makes it better is driving below 100kms/hr.
Today, however, temperatures got down to 3-4C (36-38F) today and vibrations are 90% gone until tires warmed up (20-30kms), when the vibrations came back moderately but not as bad as when the ambient air temperature was 11C (~52F)
I would argue that some of the tire compounds might be the reason behind some of these ghostly harmonic vibrations.
Thoughts? Similar stories?
