The Ultimate TRUE TIRE SIZE Database

YDAJC

New member
If they’d ever produce a set of 39” km3s, I’d post up what they are. their supposed to measure 38.5” but we will see


2015 JKUR AEV JK350
1985 Jeep Scrambler

So I did see a set of KM3 39 for sale second hand... ( New with labels on, stated he was going in a different direction) on the floor no air not mounted they measured 38.5+. Figure with air and a 6000# jeep they should come out to around 37ish static at 30ish PSI. On the road rotational forces would spin the tire to closer to 39 inches.
 

wjtstudios

Hooked
So I did see a set of KM3 39 for sale second hand... ( New with labels on, stated he was going in a different direction) on the floor no air not mounted they measured 38.5+. Figure with air and a 6000# jeep they should come out to around 37ish static at 30ish PSI. On the road rotational forces would spin the tire to closer to 39 inches.

Thank you. I’m hearing rumblings that they are going to run more this fall.


2015 JKUR AEV JK350
1985 Jeep Scrambler
 

YDAJC

New member
37/12.50x17 KM 3

Mounted on a 9 inch wide rim at 30 psi, are 35. 1/2 tall. Diameter unloaded is a tad over 36 inches.
 

BlueRubicon

Caught the Bug
33x1250x17 Nitto Mud Grapplers with less than 400 miles. 33 1/4 to top of side block. Closer to 32 as you go towards center of tire.
I will have 37x1250x17 Cooper SST Pro's on tomorrow afternoon. Will take same measurement.

33x1250x17 Nitto MG's.jpg
 

Clifford33

Caught the Bug
IMG_5975.jpg
Hankook Dynapro MT
35x12.50x17
Actual height is about 33-3/8” with about 300 miles on them. This is my spare that I recently put on.


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Samuelh3

Caught the Bug

Clifford33

Caught the Bug
IMG_6864.jpg
37x13.50x17
Cooper stt pro
30 psi is right at 36” to the top of the tread and 35-1/2 to the outer lug.
Only 5 miles on them.
Brand new tires.

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Last edited:

Bierpower

Hooked

A.J.

Active Member
Here you go. If you really need to know. Patigonia 38’s on 17” bead locks with 32 psi and 10k miles on them. I have them. They’re not the worst tire I’ve ever had and the size isn’t bad. Enjoy!

IMG_1087.jpg


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wjtstudios

Hooked
It’s interesting that the 38” crap tires are measuring larger than the 39” KM3s. BFGs really do run small.


2015 JKUR AEV JK350
1985 CJ8 Scrambler
 
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