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Re: Paccar Parameters
Posted to HD/Fleet Forum on 4/25/2019

What I’m trying to change is tire size. I have it set to 11r22.5 and calculated my revs. Test drove and it’s still off by three to low. Going 60 on speedo is actually 63. I’ve changed my revs both up and down. My three mph gap hasn’t changed at all. So my ques... Login to read more.