Check your speedometer (awesome link)

[NissanLunatic]

Ever wonder how fast you are really going once you upgrade your wheels/tires?

Here ya go!!!!!


http://www.paspeedo.com/calculator.htm

[IgNiTe]

Stock tires: 195/65/15
New tires: 205/40/17

When your speedometer indicates 55 MPH / KM/H, you would actually be travelling 51.65 MPH or KM/H.

cool find alex

[jesse]

Very Good find!

[pr0lifik]

haha great find man i was always curious about whether my speeding was justified since i have 17s hehe. well the verdict is in its only showing a mile more on speedo than my real speed. I was hoping it would be like 5!!!

[Diesel Clown]

is that admissible in court?

[jethro_13]

there is already a thread w/ one of these in the FAQ Forum (Tire Size Calculator) Has a graphic depiction and all.

[Neegra]

Originally posted by Diesel Clown
is that admissible in court?

i dont think so...i think youre supposed to get your speedo adjusted. i think it is illegal to drive with a speedo that doesnt work, so prob one that doesnt work right is illegal as well. unless you say you had just gotten the rims on and you were on your way to the speedo adjustment place

[ThurzNite]

Originally posted by jethro_13
there is already a thread w/ one of these in the FAQ Forum (Tire Size Calculator) Has a graphic depiction and all.

if it's the link to the miata tire calculator, yeah, it already does the speedo conversion for you.
Unless you're trying to get rid of the tire gap between the tire and the fender by using larger diameter tires, you shouldn't have much problems with your speedo. Besides, I bet the speedo isn't all that accurate anyways (it's precise, but not accurate). The inflation psi and temp of tires probably matter too, so who cares?!
Sorry...i'm kinda venting...got a speeding ticket in my 85 Volvo.
Jae

[mrdeucie]

Originally posted by Neegra



i dont think so...i think youre supposed to get your speedo adjusted. i think it is illegal to drive with a speedo that doesnt work, so prob one that doesnt work right is illegal as well. unless you say you had just gotten the rims on and you were on your way to the speedo adjustment place

you could always say you didn't know you had to have your speedo calibrated when you change your wheel tire combo.

[Parsec]

Originally posted by ThurzNite
Besides, I bet the speedo isn't all that accurate anyways (it's precise, but not accurate).
Jae

you science nerd

[ThurzNite]

Originally posted by Parsec


you science nerd

they drilled into our heads in Organic Chem Lab...it's part of the lengthy writeup.
Jae