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35 inch tires gearing speedo

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Old 07-25-2006, 05:23 PM
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35 inch tires gearing speedo

i an going with 35 s
will i need the 4.88 gear or a new speed sensor
Old 07-25-2006, 05:42 PM
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need a little more info than that
Old 07-25-2006, 05:59 PM
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sorry
96 4 runner ltd automatic
3"toytec sus lift
1" wabbit body lift
i havent installed this stuf yet
and i want to run 255 85 16 tires
could i go wider on the tires
i am still buying parts and some say you need a speed sensor and 4.88 gears
i thought i should ask a pro

Last edited by jeremystephens; 07-25-2006 at 06:12 PM.
Old 07-25-2006, 06:19 PM
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what tire sizes equal 35 inches
i like them wider to fill the fender flare holes
Old 07-25-2006, 06:36 PM
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Originally Posted by jeremystephens
what tire sizes equal 35 inches
i like them wider to fill the fender flare holes
I know 315.75r16's are a 35x12.50. You will need kind of a lot of lift to clear this size tire, just so you know.

Also: a 255.85r16 is a 33x10.50, not a 35.

As for the gearing, we need to know what gears you have now and what size tires it came with stock...

Last edited by mastacox; 07-25-2006 at 06:40 PM.
Old 07-25-2006, 06:47 PM
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some links worth reading....

35's
https://www.yotatech.com/forums/f31/35s-64357/

Fitting 35's on a 3rd gen without going sky-high
https://www.yotatech.com/forums/f2/fitting-35s-3rd-gen-without-going-sky-high-73003/
http://www.trailslesstraveled.com/vehicles/19/overview/
Old 07-25-2006, 07:00 PM
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is the stock gearing like 4:30s ?
Old 07-26-2006, 04:08 AM
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ill look for thre gearing later i gotta go to work
thanks for all the help so far
it looks like i might pull 35 3 off with the 3 inch sus and 1" bl
but will they fit on stock rims
if not how big can i go on stockers
Old 07-26-2006, 05:08 AM
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Originally Posted by jeremystephens
ill look for thre gearing later i gotta go to work
thanks for all the help so far
it looks like i might pull 35 3 off with the 3 inch sus and 1" bl
but will they fit on stock rims
if not how big can i go on stockers
You're only going to be able to fit 33's with a 3 inch suspension and a 1" body, especially if you are only using stock rims.

A 35" tire will rub on EVERYTHING in there. You would need at least a 3" body lift, aftermarket rims, and some fender cutting to do 35's. Not to mention you will want to re-gear, which is some $$$$ too... I'm guessing this is only going to be a mall-crawler? I say that because 35's will rub like crazy off road without some serious lift, even 33's rub in some cases.

Last edited by mastacox; 07-26-2006 at 05:10 AM.
Old 07-26-2006, 07:48 AM
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With that much lift, go ahead and go with 305/70/16. They are 33x12.50 and will be perfect.

35's are a pain in the ass unless you have considerable fender trimming. I have 8" of lift and still rub at full stuff.

As for gearing, go for 4.88's but, you prolly wont need to if your going with 33s
Old 07-26-2006, 08:04 AM
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about correcting the speedometer:
http://ttora.com/wiki/index.php/Speedometer_error
Old 07-26-2006, 08:14 AM
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Hmmph. Neato....
Old 07-26-2006, 08:58 AM
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With that ammount of lift, just run 285's.
Old 07-26-2006, 03:32 PM
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i am having trouble identifying the stock gear ratio
i am going with the 33's instead
it came with 265 70 16's stock
and ill definately try the speedo gearing trick!
i have the c/tr & a/tm numbers if they will help identify the gearing
it is a japanese truck so the first two of the vin are jt
the c # is 1a5
tr # is lj45
a # is a30a
tm# is a340f
hope this helps
now i am completely lost
Old 07-26-2006, 03:52 PM
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so 285 75 16
and 305 70 16
are basically the same height
what gives
i also saw where someone said that
\305's couldnt be mounted safely on stockers
so 33's with a 3 inch sl and a 1 " bl right?
Old 07-27-2006, 02:59 PM
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285 75
or 305 70
comments from people who have been in this situation before?
Old 07-27-2006, 03:04 PM
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285/75 can easily be mounted on stock rims

305/70 im not sure but im sure it can be done.. id prob go with at least 8 to 9 inchs of wheel width for those
Old 07-27-2006, 03:21 PM
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Originally Posted by jeremystephens
so 285 75 16
and 305 70 16
are basically the same height
what gives
i also saw where someone said that
\305's couldnt be mounted safely on stockers
so 33's with a 3 inch sl and a 1 " bl right?
The "metric" dimensions are W (tread width (mm)), SHP (sidewall height percentage(mm)), and RD(rim diameter (in))

So to convert from metric to inches height:

Tire Width: Width = (W)/25.4
Easy, just convert from millimeters to inches.

Tire Height: Overall Height = ((2*((W)*(SHP/100)))/25.4)+RD
Little tougher. You take the tire width, multiply by the percentage value,
multiply by 2 because there are two sidewalls, convert to inches, and add
the rim diameter in inches.


So a 285x75r16 is:
------------------
Width: 285/25.4 = [11.22 in.]
Height: ((2*((285)*(0.75)))/25.4)+16 = [32.83 in.]

A 305x70r16 is:
------------------
Width: 305/25.4 = [12.00 in.]
Height: ((2*((305)*(0.70)))/25.4)+16 = [32.81 in.]

So a 305x70r16 is about 3/4 of an inch wider than a 285x75r16, but the same overall height.
Old 07-27-2006, 03:36 PM
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thanks brian you made up my mind
i ll go with the 285's
they probably perform on the street better
i am sure they are lighter
they sound safer
thanks guys for all the great input
i ll post pics when the project is finished
i just cant quit adding things

jeremy
Old 07-27-2006, 03:43 PM
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yeah, thats how it goes, im putting 285-75-16's on, street tread (yokohama geolanders)... on stock 16x7 rims.... the have 3/8 inch or so clearance between tire and frame up front when turning, and about 3/8 inch clearance on upper-a arm... this is with about 3 inch suspension lift, havent checked rears, but should be ok....
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