45-55 mph vibration?
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Laughing Gas
Joined: Oct 2012
Posts: 1,219
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45-55 mph vibration?
On our trip to Daytona this weekend I noticed a vibration/shudder between 45-55mph. Above and below that range it doesn't happen. Dont feel it in steering wheel or pedal. Does it in both 3rd and OD. Got under truck and driveshaft doesn't move at all. Just got those new tires put on a couple weeks ago. Don't remember this vibration before that.
Just checked tire pressure - front right 48 psi. All the rest have about 45 psi, would that do it?
I have a shudder in brakes from stops above 45 mph I'm assuming warped rotors, could that do it?
Just checked tire pressure - front right 48 psi. All the rest have about 45 psi, would that do it?
I have a shudder in brakes from stops above 45 mph I'm assuming warped rotors, could that do it?
Senior User
Joined: Mar 2012
Posts: 112
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From: Troy michigan
On our trip to Daytona this weekend I noticed a vibration/shudder between 45-55mph. Above and below that range it doesn't happen. Dont feel it in steering wheel or pedal. Does it in both 3rd and OD. Got under truck and driveshaft doesn't move at all. Just got those new tires put on a couple weeks ago. Don't remember this vibration before that.
Just checked tire pressure - front right 48 psi. All the rest have about 45 psi, would that do it?
I have a shudder in brakes from stops above 45 mph I'm assuming warped rotors, could that do it?
Just checked tire pressure - front right 48 psi. All the rest have about 45 psi, would that do it?
I have a shudder in brakes from stops above 45 mph I'm assuming warped rotors, could that do it?
Senior User
Joined: Mar 2012
Posts: 112
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From: Troy michigan
I leave mine at 65 psi front n back daily driving but when i tow my trailer i'm usually at 75 psi ... U can start by going up to 60 and then go up 5 psi at a time ... Try that out and see wat happens ...even tho u just bought new tires sometimes the weights the tires shop put's on fall right of i've seen that happen within a day after buying new tires
Senior User
Joined: Mar 2012
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From: Troy michigan
The tire shop u bought them from should have told u about the air pressure ... I would still check the weights make sure the tires are balanced right
Post Fiend
Joined: Mar 2009
Posts: 11,798
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From: Mt. Shasta California
The D rated ones can be inflated up to 65 pounds which is where they are the strongest and the E's can be inflated up to 80 pounds which is where they are strongest. You might have to re-balance or have the tire shaved for roundness on a machine. That's way to low for your pressure, these are heavy light truck tires. (not like little car tires).
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