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CONFUSED.... someone clarify!!!!!

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Old 03-17-2011, 07:42 PM
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Default CONFUSED.... someone clarify!!!!!

Ok, so i just got back home from the dealer (I HATE DEALERS!!!) and in their showroom they had a brand new JK w 295/70/18 Nitto trail grapplers no lift (i asked), they looked huge on it so i went on Nittos site and looked the specs on the tire: the height is 34.57....I have 295/70/17s and they are only 33.54 according to the site... WTF?! is this right??? can it be right? AND according to the site 35/12.50/ 17 is 34.84 tall.... so if the dealer installed 34.57 in tires on a stock JK w no lift can i install 34.84 tires on my JK with a 1.5 lift???? Could the specs on the Nitto site be wrong???
Old 03-17-2011, 07:44 PM
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the 34.84 being 35/12.50/17s
Old 03-17-2011, 07:47 PM
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Take any pics? What kind of wheels were they on?
Old 03-17-2011, 07:49 PM
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A 295/70/18 should be 1" taller than a 295/70/17. The first number is the tread width in mm, so 295mm. The second number is the height of the sidewall. Sidewall height on a metric tire size is a percentage of tread width. So both the tires mention have a sidewall height of 70% 295mm, so right around 206.5mm sidewall height. The 17 is going to be 1" smaller due to the wheel size being 1" smaller.
Old 03-17-2011, 07:49 PM
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Originally Posted by JKU
Ok, so i just got back home from the dealer (I HATE DEALERS!!!) and in their showroom they had a brand new JK w 295/70/18 Nitto trail grapplers no lift (i asked), they looked huge on it so i went on Nittos site and looked the specs on the tire: the height is 34.57....I have 295/70/17s and they are only 33.54 according to the site... WTF?! is this right??? can it be right? AND according to the site 35/12.50/ 17 is 34.84 tall.... so if the dealer installed 34.57 in tires on a stock JK w no lift can i install 34.84 tires on my JK with a 1.5 lift???? Could the specs on the Nitto site be wrong???
Different brands will measure differently even if the size is the same. The specs on the websites are un mounted. There are alot of variables to consider like rim width weight on the JK and tire pressure. If your tires measure 33.54 on the Jeep, off the Jeep they are prob like 34.5 or so. The tires on the dealer JK were not 34.57 mounted, they were prob like 33.75 or something. Also I would bet money that the dealer had the tire pressure at like 50
Old 03-17-2011, 07:52 PM
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Oh, i forgot to mention i also have Nitto trail grapplers on my JK.
Old 03-17-2011, 07:52 PM
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Originally Posted by jmat1980
Also I would bet money that the dealer had the tire pressure at like 50
What

You don't run yours at 50 PSI
Old 03-18-2011, 03:23 AM
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Originally Posted by highoctane
A 295/70/18 should be 1" taller than a 295/70/17. The first number is the tread width in mm, so 295mm. The second number is the height of the sidewall. Sidewall height on a metric tire size is a percentage of tread width. So both the tires mention have a sidewall height of 70% 295mm, so right around 206.5mm sidewall height. The 17 is going to be 1" smaller due to the wheel size being 1" smaller.
x2 295/70/18 should be taller
Old 03-18-2011, 03:35 AM
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x2 to the posts above....

295/70/17=33.25"

295/70/18=34.25"
Old 03-18-2011, 03:55 AM
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Originally Posted by JKU
Ok, so i just got back home from the dealer (I HATE DEALERS!!!) and in their showroom they had a brand new JK w 295/70/18 Nitto trail grapplers no lift (i asked), they looked huge on it so i went on Nittos site and looked the specs on the tire: the height is 34.57....I have 295/70/17s and they are only 33.54 according to the site... WTF?! is this right??? can it be right? AND according to the site 35/12.50/ 17 is 34.84 tall.... so if the dealer installed 34.57 in tires on a stock JK w no lift can i install 34.84 tires on my JK with a 1.5 lift???? Could the specs on the Nitto site be wrong???
They may have 35's on it with no lift but it will rub the fenders off road and probably pop them right off.


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