Thread: VX wrong trans
View Single Post
Old 04-13-2012, 01:14 PM   #28 (permalink)
some_other_dave
Master EcoModder
 
Join Date: Jul 2008
Location: Silly-Con Valley
Posts: 1,479
Thanks: 201
Thanked 262 Times in 199 Posts
Quote:
Originally Posted by SiVX View Post
Question:" My 185 tires are 10.8% larger than the VX 165s. Does this mean my RPMs for a given speed should be about 11% lower than normal?
If you are asking if changing tire sizes will change what the speedometer reads for a given RPM in a given gear, then no.

If you are asking if it will change the actual speed for that RPM, then yes.

The speedometer only "sees" how fast the drive wheels are turning. Changing the tire size will change what that actual speed is, but the speedometer and tach will still read the same.

-soD
  Reply With Quote
The Following User Says Thank You to some_other_dave For This Useful Post:
SiVX (04-13-2012)