Actual tire size (1 Viewer)

[TRFCSUX]

So i have had this conversation with a couple people lately, Different companies seem to measure tires differently. BFG seems to come up short on the advertised size. As do many others but I have more experience with them. Im looking for a big 33 or a slightly smaller 35. ok maybe a 34 would be perfect. Does anyone have a tire that actually measures out to be 34 inches tall ? Not the advertised size but real mounted tire measuring at 34 inches tall ? To make it even more difficult for me I have 17 inch wheels so all the tires are measured in metric sizes and I can't wrap my old brain around that either.. Yes it has been broken down for me 100 times but I understand inches , 33x12.5x15 makes since to me. 285x70x17 makes no since.

I guess im asking you guys to measure your tires, I want to find a brand that runs true to advertised size, then I will shop that brand.
So if you have a 315x70x17 and it measures out at 33 inches tall thats what I want to know
Thanks

 

[Stumpalama]

Pit Bull and Interco are 2 that I know of.

 

[afgman786]

I use this for helping understand the metric size.. Tire Size Comparison
Also wouldn't it vary depending on what vehicle it is on due to weight?

 

[Crusha]

I have some mounted KM2’s on 17” FJC steelies that I’ll measure tomorrow. Supposed to equate to 34”. They are not on a truck, and I think one of them is practically new.

I’m right there with ya on the metric confusion.

 

[DustyFJ]

I think it also depends on the width rim you are mounting the tire to. I had a set of 35 12.50 Mickey Thompson Baja claws mounted to 15x10” rims. The tires aired down measured close to 33” but had a monster contact patch.

A narrower rim they might not have ballooned out so much. They might have been a little taller and skinnier

 

[Tikicruiser]

Nitto has true 34” tires. I believe the 285 75 R16 is 34” vs 285 70 R16 is 33 with the trail grappler. I have two sets on my 40 and Taco and have been happy with both for look, traction and durability.

 

[matzell]

look into a 295 70 17

 

[fireball]

Here is the size chart for BFG KM3s, per tirerack.com website.

I think you want a 285/75/17.

FWIW, the 285/70/17 ko2s on my 200 measure 31.75", so almost an inch less than stated.

Here's some additional reading. These are j**p guys, but surely they can operate a tape measure?!

The Ultimate TRUE TIRE SIZE Database

Before I get this started, it needs to be made clear that when it comes to things like lift kits and tires you can run with them, EVERY manufacturer, shop and person in the industry will always refer to what is written on the sidewall and NOT the true height of the tire. In other words, if a...

wayalife.com

 

[Crusha]

Brand new, unmounted, 285/75/17 KM2.

33 1/2”

 

[Crusha]

Speaking of tires...

Look at this 35" KM2, that has been sitting in the back of my shop for about a year or so. It was perfectly round when I rolled it to that spot.

Weird, huh?

 

[fjman]

All of them seem to round up (Maybe we all do for some things!). I know when I bought my 33 “ Firestone MTs years ago they measured very true to size and it was a deciding factor in giving them a try. A lot of the other 33’s were more like 32.2-33.5

 

[fireball]

Nitto Trail Grappler M/T in 285/75R17 are commonly referred to as “34s.” I have them on factory 17x7 wheels at 35 psi on road and they measured out at 32 3/4” 5 mins ago.

View attachment 2154169

How many miles on the tire?