LRP April 26, 27 GT results.

[Doug Johnson]

Original tire (195-60/14) diameter:
195(2)(0.6)+14(25.4) = 589.6 mm

225-50/15 tire diameter:
225(2)(0.5)+15(25.4) = 606.0 mm

606/589.6 = 1.027

If your speedometer is accurate, and 195-60/14 is your stock tire size,
you're going 2.7% faster than indicated.  I get 105.781 mph.

Plug in your own numbers, and you can come up with the results you desire.


<snip>
Also, anyone want to translate speed for me - I'm running 225-50-15's, and
hit an indicated 103 on the straight - I'm figuring about 110mph.

Not too shabby for 130hp front driver...
:-)

Any questions, send them along
Later!
Carter