Weird bounce/vibration at 65mph
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Banned Goober Smoocher
Joined: Jun 2010
Posts: 8,916
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Weird bounce/vibration at 65mph
Yep, a weird bounce or vibration at 65.
The reason it is weird is because it only starts showing up at 62, gets bad at 67, and totally goes away at 75.
WTH?
It feels like a tire bounce. I've had the tires rotated and balanced. When they were balanced, the shop had some difficulty since the wheels are aftermarket and the tires are kinda large.
I'm pretty sure my suspension parts are tight. I AM wondering if my sloppy rod ends are contributing.
Any ideas?
The reason it is weird is because it only starts showing up at 62, gets bad at 67, and totally goes away at 75.
WTH?
It feels like a tire bounce. I've had the tires rotated and balanced. When they were balanced, the shop had some difficulty since the wheels are aftermarket and the tires are kinda large.
I'm pretty sure my suspension parts are tight. I AM wondering if my sloppy rod ends are contributing.
Any ideas?
Grand Champion
Joined: Apr 2010
Posts: 5,011
Likes: 6
From: Meeker, CO
Sloppy tie rod ends, or any other slop in the steering/suspension will cause just that when the slightly unbalanced wheel's rotation speed hits the resonant frequency of the failing structure. Which accelerates the wear of the failing part, which will often lower the resonant frequency of the structure so the vibration/hop happens at a lower road speeds.
So... replace whatever's sloppy, and be a zealot about tire rotation and balancing for as long as you've got a difficult to balance combination hanging on the ends of the axles. I'm wondering if the tire monkey who mounted and balanced your set even knows about match mounting. A lot of them don't these days.
So... replace whatever's sloppy, and be a zealot about tire rotation and balancing for as long as you've got a difficult to balance combination hanging on the ends of the axles. I'm wondering if the tire monkey who mounted and balanced your set even knows about match mounting. A lot of them don't these days.
Administrator
Joined: Apr 2010
Posts: 87,393
Likes: 4,213
From: Clayton MI
Sloppy tie rod ends, or any other slop in the steering/suspension will cause just that when the slightly unbalanced wheel's rotation speed hits the resonant frequency of the failing structure. Which accelerates the wear of the failing part, which will often lower the resonant frequency of the structure so the vibration/hop happens at a lower road speeds.
So... replace whatever's sloppy, and be a zealot about tire rotation and balancing for as long as you've got a difficult to balance combination hanging on the ends of the axles. I'm wondering if the tire monkey who mounted and balanced your set even knows about match mounting. A lot of them don't these days.
So... replace whatever's sloppy, and be a zealot about tire rotation and balancing for as long as you've got a difficult to balance combination hanging on the ends of the axles. I'm wondering if the tire monkey who mounted and balanced your set even knows about match mounting. A lot of them don't these days.
Grand Champion
Joined: Apr 2010
Posts: 5,011
Likes: 6
From: Meeker, CO
Can't have a guy out in the garage earning his pay now, can we? 
They don't even know how to match mount, but they'll upsell nitrogen to the ignorant. Geezus... the world we live in is broken.
They don't even know how to match mount, but they'll upsell nitrogen to the ignorant. Geezus... the world we live in is broken.
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Grand Champion
Joined: Apr 2010
Posts: 5,011
Likes: 6
From: Meeker, CO
Working for a living is a highly overrated waste of human potential, I think. I've been working since I was 12 years old and working for a living since I was 16 and still can't find a thing about it to recommend it. Be that as it may, when I agree to do a job I implicitly agree to do my very best at it and I unrealistically expect the same of others.
Yeah, I'm way too often disappointed...
Yeah, I'm way too often disappointed...
Professional
Joined: May 2011
Posts: 213
Likes: 0
From: DE
I have a bounce at 40-47 mph that is due to bent wheels..you should have your wheels checked as well
The previous owner dropped my truck somehow because there are some strange things wrong with it haha
The previous owner dropped my truck somehow because there are some strange things wrong with it haha