MustangWorks.com : Ford Forums - View Single Post - Tach Doesn't Work Wondering Whats My Rpm's On The Freeway

~The Jester~ · 05-17-2005, 10:08 AM

Need to know tire diameter (in inches) and in what gear are you talking? I'm GUESSING the tires are about 26.25" or so, and assuming you mean overdrive, that puts you about 2300 RPM at 70MPH, according to the calculators here on MW.

05-17-2005, 10:08 AM	#2
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: Tach Doesn't Work Wondering Whats My Rpm's On The Freeway Need to know tire diameter (in inches) and in what gear are you talking? I'm GUESSING the tires are about 26.25" or so, and assuming you mean overdrive, that puts you about 2300 RPM at 70MPH, according to the calculators here on MW. __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....