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Old 03-03-2005, 10:08 AM   #5
Ralph Greene
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Join Date: Mar 2003
Location: Longwood Fl
Posts: 3,724
Re: Site for tire sizes and spedometers

This site gives same numbers as my trusty calculator, but keep in mind you're probably about 2-3% fast from factory, so some of the slightly larger than stock tire/wheel combo's are probably bringing you back into dead accurate speedo range....which is one reason I chose my slightly larger than stock diameter tires. Cody went one size larger than I did, and I bet he's either dead on or only slightly reading slow, no big deal, but enough to be careful if he runs thru his buddies radar gun.
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Ralph Greene
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03 Mach 1 (Torch Red) 5 Speed Manual
Real Ford FR 500 18X9 Wheels
255X40X18 Michelin Tires
Steeda Sport Springs (isolators in)
Tokico HP Struts/Shocks
Steeda 4 bolt CC Plates
Poly Offset Steering Rack Bushings
Steeda TriAx Shifter
Magnaflow X/Cats
Bassani Catback with Removable Baffles
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