Monterorider
Adventurer
IWell it can't be reagardless since it's oranges and bananas. One is off one way another the other.My calculations are pretty simple and straight forward actually. The 33" tire is ~12% larger than the 29" tire hence it's a 12% increase in speed regardless of how accurate the speedometer is.
I like to be exact. what car/truck on what tires? If it's modern car then yes lately they've been more accurate. If it's Montero on 33's then speedometer was way off on stock tires.Now that said it is important to know your actual speed and in my experience comparing the speedo against several gps units, the OE speedometer has been accurate to within 1-2mph or so at freeway speeds.:ylsmoke: