75 MPH

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Posted by bruce in bc [] on Thursday, March 16, 2023 at 11:35:18 :

In Reply to: Re: Axel width GM corporate 14 bolt posted by Mike M [] on Thursday, March 16, 2023 at 11:22:35 :

Too much vibration and noise at 75 MPH,
At 65 I am running about 2100 RPM - sweet spot
Yes I have run it at 75MPH but it works the truck and mileage drops.
Big tires are a bear to balance and in many cases next to impossible, I am running 4 ounces of beads in each tire and had to swap one tire to the rear or the vibration at 55 was excesive - went away at 65 MPH - swapping to the rear and the vibration cleared up.
If you want 75MPH then 4.56 would be a better choice - expect to wear ear protection:)

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