Lets get the tape out!!! (Tires) - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 21 Old 07-28-2009, 12:05 AM Thread Starter
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Lets get the tape out!!! (Tires)

I am in the market for a new set of tires. I am running 37" Krawlers now, but as much street drving I do, I need a new tire. soooo.... I am looking for a TALL 37" tire. Currently my 37" Krawlers measure in at 35 3/4" on the Jeep. If you have some free time, measure you tires and post the make please.

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post #2 of 21 Old 07-28-2009, 12:29 AM
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if what your lookin for is a "true" 37" tire...check out those new MT/R's with Kevlar...I've been reading up and hearing good things, haven't run them but all the field test seem pretty cool


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post #3 of 21 Old 07-28-2009, 07:57 AM
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Go see Hundy.
http://www.100dollarman.com/tires.html

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post #4 of 21 Old 07-28-2009, 08:20 AM
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37 Kevlar MT/Rs measured 36.5 inches (vertically) on my JK aired up to 30 PSI and loaded when they were new.
post #5 of 21 Old 07-28-2009, 02:13 PM
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Going from memory this is what the tires on the JK measured when new:

40" MTR/K = 39.25"
37" KM2 = 35.5"
36" IROK = 34.5"
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post #6 of 21 Old 07-28-2009, 08:10 PM Thread Starter
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Anybody have input on the Toyo's?

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post #7 of 21 Old 07-28-2009, 10:43 PM
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overpriced...like so many

and as far as "true size"....i know 37's measure to around 34-35"'s


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post #8 of 21 Old 07-28-2009, 11:07 PM
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Quote:
Originally Posted by lbh View Post
Anybody have input on the Toyo's?
I have 37" Toyos on both my JK and my dually and they measure a full 37" on both trucks. However, we are running 35" Toyos on my wife's Suburban, but they only measure 34 inches tall. Go figure.
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post #9 of 21 Old 07-29-2009, 07:08 AM
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I ran 38" Toyo's in the past and they measured 36.25", and i know they were bigger than the Toyo 37's.

You have to remember that rim width makes quite a difference to the measured height. Look at most of the manufacturers measured heights and you'll notice that they are generally on rims at the wide end of the width range.
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post #10 of 21 Old 07-29-2009, 08:17 AM
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Quote:
Originally Posted by PhilD View Post
Going from memory this is what the tires on the JK measured when new:

40" MTR/K = 39.25"
37" KM2 = 35.5"
36" IROK = 34.5"

My 36" iroks are 35.5" (from the ground to the top of the tire)with 24psi in them and an empty jeep, and probably 50% tread left.


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post #11 of 21 Old 07-29-2009, 08:37 AM
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Quote:
Originally Posted by Alec W View Post
37 Kevlar MT/Rs measured 36.5 inches (vertically) on my JK aired up to 30 PSI and loaded when they were new.
I'll 2nd that measurement! They even looked much bigger than my 37" BFG M/T KMs did side by side.

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post #12 of 21 Old 07-29-2009, 01:57 PM
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Quote:
Originally Posted by 93country View Post
My 36" iroks are 35.5" (from the ground to the top of the tire)with 24psi in them and an empty jeep, and probably 50% tread left.
Mine were never close to that on 9" wide rims.
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post #13 of 21 Old 07-29-2009, 01:58 PM
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Quote:
Originally Posted by Prope View Post
I'll 2nd that measurement! They even looked much bigger than my 37" BFG M/T KMs did side by side.
The MTR/K's are the closest to advertised size tires I've seen.
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post #14 of 21 Old 07-29-2009, 03:15 PM
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Quote:
Originally Posted by Alec W View Post
37 Kevlar MT/Rs measured 36.5 inches (vertically) on my JK aired up to 30 PSI and loaded when they were new.
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post #15 of 21 Old 07-29-2009, 10:31 PM
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when new my 315/75 r16 km2's measured 34.8" which was the advertised height. mine were mounted on 16x8's. I had heard that the wider the wheel, the shorter the actual tire height. Is this true or not?

I have a jeep and it goes over shit.
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post #16 of 21 Old 07-29-2009, 10:37 PM
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Quote:
Originally Posted by PhilD View Post
Going from memory this is what the tires on the JK measured when new:

40" MTR/K = 39.25"
37" KM2 = 35.5"
36" IROK = 34.5"
36" IROKS are 36.5

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post #17 of 21 Old 07-29-2009, 10:53 PM
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Originally Posted by levellinebrad View Post
I had heard that the wider the wheel, the shorter the actual tire height. Is this true or not?
True in theory. The wider the wheel, the more that the tire is being "stretched" out. The narrower the wheel, the more "compressed" the sidewalls become, allowing them to gain a little more height. However.....between a 1" difference in wheel width, I doubt there is much noticeable difference in tire height.

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post #18 of 21 Old 07-29-2009, 11:05 PM
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Quote:
Originally Posted by StubEXrube View Post
True in theory. The wider the wheel, the more that the tire is being "stretched" out. The narrower the wheel, the more "compressed" the sidewalls become, allowing them to gain a little more height. However.....between a 1" difference in wheel width, I doubt there is much noticeable difference in tire height.
cool info, thanks

I have a jeep and it goes over shit.
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post #19 of 21 Old 07-30-2009, 08:11 AM
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Quote:
Originally Posted by levellinebrad View Post
I had heard that the wider the wheel, the shorter the actual tire height. Is this true or not?
There will be an optimal rim width where the tire is at it's tallest, going wider or lower will reduce the tire height. Some tires will bow in the tread section when on narrow rim, causing a little increase in height, but this is unwanted height as it is only in the center of the tread.

If you look at the measured heights published by the manufacturers you will see that they are usually on the a rim at the wide end of the recommend rim width range, especially on larger sizes.
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post #20 of 21 Old 07-30-2009, 08:52 AM
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Since my wife is driving the Jeep, I will see if I can get home early enough to measure the 37" BFG's we have. Or you can measure them saturday if we go to hungry valley, That might be the next time I even get to see the jeep myself....haha
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post #21 of 21 Old 07-30-2009, 09:50 AM
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GoodYear Wrangler Mtr/Kevlar 35x12.50x15" on my 15x8" wheels measured 34.25" with 35lbs. and 34" even with 27lbs of pressure when new.

It is probably a safe bet that they do measure the advertised 34.8" when off from the vehicle. And according to the GY website that is 34.8" on a 10" wheel at 35psi.

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