View Single Post
  #27 (permalink)  
Old 05-07-2008, 08:18 PM
zuhl zuhl is offline
Senior Member
2006 Billet Silver / Gray RTL
 
Join Date: Apr 2006
Location: Houston, TX
Posts: 220
Re: The 32.5" BFG M/T KM's & Truxxx Fit Great!!!

How is that possible that you are going slower than your speedometer with tires that are considerable larger than stock? I mean, it just does not compute. I believe you, but it does not make sense how that could happen.

For every one turn that the wheel sees, it is registering the distance travelled as the circumference (3.14 * 29.5 = 92.67 in.) of your factory tires. Your circumference (3.14 * 32) is larger than that by 8.4%, so at 60mph on you speedo you should be doing roughly 65 mph in reality. My error with 31.4" tires is about +7.5% as measured by two different GPS systems. You should have to get smaller than factory tires to accomplish what you have reported here.


Was your speedo dead on before the tire swap?
__________________
Mods: Access Soft Tonneau Cover, Curt Hitch, Blitzsafe DMX V.2X Aux Input, Aftermarket Fogs mounted in grill, GE Nighthawk bulbs, 2" Rancho Lift, 18" Black Chrome Ruff Racing Wheels, 265/60/R18 Goodyear Wrangler Silent Armor, 12" Pioneer Shallow Sub behind rear seat, 450 Polk Amp, Polk db650s all around.
Reply With Quote


Hey Guest!
Not Registered with the ROC? Register on our forums today!

Registration is FREE and you'll be joining the #1 Honda Ridgeline owner and enthusiast club in the world! You'll also be removing this ad, so please join the Ridgeline Owners Club today!