The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Difference in Hiway RPM-3.73 to 3.42

geezer#99 · 06-03-2023, 09:09 AM

About 250 rpm less.
I use this handy calculator.

http://www.advanced-ev.com/Calculators/TireSize/

06-03-2023, 09:09 AM	#3
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,522	Re: Difference in Hiway RPM-3.73 to 3.42 About 250 rpm less. I use this handy calculator. http://www.advanced-ev.com/Calculators/TireSize/