neon set up help?

[steveshawjr]

some people think because the tire size say p205/75/15 is the same as a p205/75/14 and in fact there not lets brake this down on how a tire is measured

p205-width of tread in mm
75- height of sidewall by % of tread width

now lets do some math


14 inch wheel = 2 * 3.14 * 7 = 43.96 circumference

15 inch wheel = 2 * 3.14 * 7.5 = 47.1 circumference

205 is close to 8 inch so we will use 8

75 / 100 * 8 = 6 the height of the sidewall in inch

now lets make it a circumference of a tire

6 * 2 + 14 = 26 / 2 = 13
2 x 3.14 x 13 = 81.64
81.64 is the circumference of a tire for a 14 " wheel

6 * 2 + 15 = 27 / 2 = 13.5
2 x 3.14 x 13.5 = 87.48
87.45 is the circumference of a tire for a 15 " wheel


its a big difference when its roughly 100 rpm difference per inch of tire
looking at almost 600 rpm difference between a 205/75 14 and a 205/75 15


just some food for thought when it comes to tires

[little302]

After all the discussion

This mans 1st question hasnt been answered. It was about set up...IF I had any knowledge of such, Id help. My suggestion is to PM 22 Dodge. Hes full of it!! It being any amount of useless, and critical info that you may need...

[Breelee01]

Hello so I'm running a dodge neon 1997 dohc at upper Iowa speedway on dirt. And needing some help with being faster in the corners. I run third gear with 14" tires. I have good camber but not fast enough on the starts and in the corners.

[bgreorasmaarleya7044]

neon set up help

Hi guys,I was wondering how you can measure and set the mk147 kit at exactly 50 Hz. I would like to put it fixed at that frequency.Is there somebody who can tell me?Many thanks in advance.sander13