Mystery random shimmy@ 48-50 mph

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

yogibear18

Member
Joined
Feb 26, 2021
Posts
89
Reaction score
57
Location
Michigan
Ram Year
2018
Engine
Hemi 5.7
I don’t know if I posted anything of this but I have a weird random shimmy @ 48-50 mph, tires less than 10,000 miles on all 4 that were replaced last year in November with cooper ev2 evolutions, the truck is an ‘18 big horn cc w/ 20” rims about 54,… miles, taken back twice and rebalanced seems to help for a short time, suspension,axles and shocks no leaks and appear to be no play in any of them, tire store says nothing wrong with the tires? No warranty I chose not to buy so I feel screwed…
 

Daw14

Senior Member
Joined
Nov 29, 2017
Posts
3,429
Reaction score
5,477
Location
South Florida
Ram Year
2014
Engine
5.7 hemi
Have you tried a different shop to have them balanced?

What about a Roadforce balance ? This seems to correct issues that a standard balance can not . Sometimes.

Have you reached out to the manufacturer? It seems a bit early for that .

Try different shops.
 
OP
OP
yogibear18

yogibear18

Member
Joined
Feb 26, 2021
Posts
89
Reaction score
57
Location
Michigan
Ram Year
2018
Engine
Hemi 5.7
Forgot to mention it’s been two other tire shops and yes road force balance each time, wheel bearings seem to have no play when you check by movement of the tires on hub
 

Mojo88

Senior Member
Joined
Feb 4, 2024
Posts
725
Reaction score
1,887
Location
Rhode Island
Ram Year
'19 Longhorn Gen5 ORG
Engine
Hemi 5.7L non-eTorque
Did it shake only BEFORE these tires were installed??? Or did the shake start AFTER new tires?
 

Mojo88

Senior Member
Joined
Feb 4, 2024
Posts
725
Reaction score
1,887
Location
Rhode Island
Ram Year
'19 Longhorn Gen5 ORG
Engine
Hemi 5.7L non-eTorque
Rotate the tires and see if anything changes.

@yogibear18 - I would do this ^^^^^, but I would do it myself. I would examine each wheel and tire carefully while off the vehicle, looking for any little bend in the metal wheel, or bulge or deformity in one of the tires. You have to look closely, as sometimes a tire deformity is hard to spot.

I would re-install each wheel/tire very meticulously, cleaning all mounting surfaces on the hub and wheel, to make sure there is no debris that would cause the wheel to be off kilter. Then I would install and tighten lug nut in three careful steps, snug, fairly tight, and then final torque..... always being sure to use a criss-cross tightening pattern on the nuts to get the wheel laying true to the hub.

After mounting, I would spin each wheel by hand and observe closely, to make sure everything is smooooooth, with no wobbling or any other visible defects.

I know this sounds like a PITA, which it is. But most shops are just in a hurry, and won't take the time to find a small defect. Or maybe they're just jamming the wheels back on with an impact wrench, and not tightening lug nuts properly. If you find a tire with ANY visible defect, then take it back. If you're out of warranty, then buy a new tire. And if you rotate the tires, that might help. Plus you might need to reset TPMS.

Keep us posted.
 

16WhiteQC

Senior Member
Joined
Oct 17, 2016
Posts
517
Reaction score
422
Location
Hudson valley, NY
Ram Year
2016
Engine
5.7
My 08' Powerwagon did it at those speeds as well as this truck does it at those speeds, both QC's.

Both truck had multiple sets of tires, noticed it more after the tires wore.

I chalked it up to the platform/chassis and tire wear.
 
Back
Top