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post #1 of 7 Old 02-13-2012, 11:26 PM Thread Starter
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what can I do

Okay first off I searched and found a lot of stuff but not about what I want to know. I'm looking to upgrade my tires and wheels at the same time. I'm not looking to lift or do spacers. I'd like to go with AEV Pintlers as far as wheels go but what size tires can I go with. I just don't understand. I have 255 75 r17 and I want to go up to 33s so from my searches I need to go up to 295 70 r17?
I thought the middle number was the distance between the road and the rim. Boy am I confused

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post #2 of 7 Old 02-13-2012, 11:32 PM
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First number is width. Middle number is the aspect ration of the sidewall. This part is confusing because a 75 could be drastically different with width and rim size.

On a stock suspension, 33 is about as large as you'll be able to go. Figure out what type of tire you want to go with. Go to the manufacturers website and look up the specs of the tires. They will have the width and height of the tire in inches printed out to take any confusion out of the picture for you.

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post #3 of 7 Old 02-14-2012, 12:50 AM Thread Starter
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okay that's good. not looking to go taller than 33s. just trying to understand what tire size I should be looking at.
I mean if I go with the AEV what tire size do I go with if I'm looking to be at 33?
I thought 275 75 r17 would work but I can't find that tire size anywhere. So it looks like I need to go to a 295 70 r 17 to go up to 33s. I don't get it I thought a 75 was taller than a 70.

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post #4 of 7 Old 02-14-2012, 02:05 AM
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Quote:
Originally Posted by oncewas View Post
okay that's good. not looking to go taller than 33s. just trying to understand what tire size I should be looking at.
I mean if I go with the AEV what tire size do I go with if I'm looking to be at 33?
I thought 275 75 r17 would work but I can't find that tire size anywhere. So it looks like I need to go to a 295 70 r 17 to go up to 33s. I don't get it I thought a 75 was taller than a 70.
there isn't a 285? You could just flat fender it with 34's and call it a day. Most 34's don't run true to size

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post #5 of 7 Old 02-14-2012, 03:03 AM
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4lo.com has a metric tire conversion calculator.

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post #6 of 7 Old 02-14-2012, 04:23 AM
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Quote:
Originally Posted by oncewas View Post
I thought the middle number was the distance between the road and the rim. Boy am I confused
The middle number isnt exacly the height of the sidewall (dist between road and rim), but as Oz mentioned, it is the aspect ratio used to DETERMINE the sidewall height. In other words if it is "70", then you would multiply the first number(width) by .70 to determin actual sidewall height. Double the sidewall height and add your rim diameter and you got your tire size.... or just use the tire size converter, lol. Hope this helps!!
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post #7 of 7 Old 02-19-2012, 09:42 AM
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FYI, I just put 305/70-16" on my 2012 JK.
Wheels have 4.75" BS.
No lift.

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