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## Gear Ratio???

don't go by what i say ''i hate trying to figure out gear ratio's'' but i want to post what i would put in it to see if everybody else comes up with the same thing. i would put 4.88 in it. come on guys how wrong am i eric

i dont have my spreadsheet at home but i run 35's and 33's on the front with 488's and 543's and i show that to have .03.04% over spin.

HMM there is alot of ways to do this but from what I was taught I came up with 4:95 Ratio Needed, You want to be as close to that number as possible!

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from what i calculate if im right in mile per hour tire speed with 6.0 and 4.88 and the tires your running there would be 2 miles faster in the front.....http://www.4lo.com/calc/gearratio.htm

(Front tire Dia. (roll out) X rear gear ratio) Divided by the rear tire Dia. (roll out) = front gear needed.

33" tire x 6.00 gear = 198

198 divided by 40" tire = 4.95 gear (4.88 gears would give him less then 1% overdrive) most like around 6-10% overdrive (a 4.56 gear would give around 8%)

To be more accurate, it is best to use formula using roll out of the tires on the vehicle rather then just tire diameter.

(Front tire Dia. (roll out) X rear gear ratio) Divided by the rear tire Dia. (roll out) = front gear needed.

33" tire x 6.00 gear = 198

198 divided by 40" tire = 4.95 gear (4.88 gears would give him less then 1% overdrive) most like around 6-10% overdrive (a 4.56 gear would give around 8%)

To be more accurate, it is best to use formula using roll out of the tires on the vehicle rather then just tire diameter.

i always run as close to straight up as possible maybe thats why mine drives like chit eric

ok terry so 44's rear 5.86 rear gear 34.5x9.50 swampers front what gear do i need for front? i came up with 4.56:oops: eric

I use the calculator on www.markwilliams.com It usually gets me close enough for the girls I date Gives transmission rations too.

11 posts
• Page **1** of **2** • **1**, 2

O.k folks, here we go again. This one is for a friend. 40in rear tires, 33in front tire, 6.00 rear gear. What front gear should he run and what percent overdrive would it be. Thanks

- Ryan Dolan

- Rawlings, MD

- (301)876-3145

- MRA# 381

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33" tire x 6.00 gear = 198

198 divided by 40" tire = 4.95 gear (4.88 gears would give him less then 1% overdrive) most like around 6-10% overdrive (a 4.56 gear would give around 8%)

To be more accurate, it is best to use formula using roll out of the tires on the vehicle rather then just tire diameter.

Well 4.56 is what I thought to begin with. I guess I'm not as far off as I think I am with this stuff LOL Thanks again guys.

- Ryan Dolan

- Rawlings, MD

- (301)876-3145

- MRA# 381

traveler wrote:

33" tire x 6.00 gear = 198

198 divided by 40" tire = 4.95 gear (4.88 gears would give him less then 1% overdrive) most like around 6-10% overdrive (a 4.56 gear would give around 8%)

To be more accurate, it is best to use formula using roll out of the tires on the vehicle rather then just tire diameter.

i always run as close to straight up as possible maybe thats why mine drives like chit eric

11 posts
• Page **1** of **2** • **1**, 2