Hi all,

I have looked though several posts and have come to the conclusion that most people with stock wheels and tires on 06 Daytonas have their tire size set to 27.5" in their Flashpaq 3825. I did the calculation and come up with 28.18". I also did a crude measurement of the actual tires and have about 27 3/4 in the front and 28 in the back (probably different due to the weight difference seen by the tires. Please help me understand why 27.5 is used instead of 28.0.

235*0.55=129.25

129.25/25.4=5.09

5.09*2=10.18

18+10.18=28.18 inches.

jde

 

The formula I used from a friend we got 27.5 on it .

 

Thanks. Do you have the formula?

 

I will post it later tonight

 

Checkout: http://www.1010tires.com/TireSizeCalculator.asp

Very useful tool.

 

ok with this one I am getting 28.17.It is possible I am having wrong formula at work 235 55 18 I get 28.17 with the calculator.

 

I am guessing it is a rounding vs. truncation issue.

The formula (I just made up is): D = W + 2((R * Wd)/25.4)
using W=18", R = 0.55 and Wd = 235
I got: 28.177717

My calculator originally rounded that to 28.18 but if a program just truncated it to 2 decimal places it would be 28.17.