Hello im planning on buying a new Volvo and i would like to know what would be my crusing rpm range at 70 mph, it has an ISX15 525HP 13 speed manual with 3.42 rears on 22.5s. Also is this a good all around combination to run on the west and east? Thanks all for the inputs
Ratio question
Discussion in 'Experienced Truckers' Advice' started by NWAF, Jul 28, 2015.
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low pro or tall rubber?
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It will be roughly 1500 rpm on 295/75R22.5 tires and 1450 rpm on 11R22.5 tires.
Simple equation to figure out.
Road speed x gear ratio x rear end ratio x tire revs per mile / 60.
Cummins recommends a 1400 rpm cruise speed at 65 mph with the isx and a max cruise rpm of 1600 rpm. So I'd say you're good.NWAF Thanks this. -
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Why tall rubber if may I ask?
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mp4694330 Thanks this.
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see if dealer will switch them out
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