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Old 03-29-2014, 10:52 AM   #1
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Holy cow why are tire sizes so confusing?

After reading tons of threads and using my good friend Google I have decided that I want to get 35 inch tires and keep my stock 2008 JK Sahara 18 inch rims.

Now here I am looking for good deals on tires and holy cow sizes are confusing. Currently I have the stock tires, 255/70/R18, which equate to about 32 inch tires. Now when I go looking for tires I see similar tire size formatting (255/70/R18 and such)

When using the site

Tire Dimensions Made Simple - Discount Tire

to compare sizes I realize I have no clue what I'm doing and can't figure out what size would be equivalent to 35 inch tires. Why is this so confusing?

I'm looking to get either Goodyear Duratracs or Nitto Terra Grapplers that also fit my rims. Any suggestions?

Thanks.

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Old 03-29-2014, 11:18 AM   #2
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These are roughly the sizes you need to look for to get close to a "35"

295/70-18 295/75-18 305/75-18 315/65-18 315/70-18
d=34.26 d=35.42 d=36.01 d=34.12 d=35.36
w=8.13 w=8.71 w=9.01 w=8.06 w=8.68

315/75-18 325/65-18
d=36.60 d=34.63
w=9.30 w=8.32



325/70-18
d=35.91
w=8.96


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Old 03-29-2014, 11:19 AM   #3
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There was suppose to be spacing in there. Sorry.
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Old 03-29-2014, 11:21 AM   #4
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Actual sizes will very between manufactures, but should be able to get close. 35" Duratracs were like 34.8 ish off the jeep and mounted up measure 33.5" with weight of jeep on them.
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Old 03-29-2014, 11:43 AM   #5
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You're awesome man. That's the kind of information I needed.

I saw

2 questions re Duratrac 275/80-18s

this post and it talks about a 275/70-18s. When I input those specs into that link in my original post they are 35.32 inches. Does that sound right as well?
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Old 03-30-2014, 10:20 PM   #6
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Most manufacturer's make an LT (English units) of comparable to the metric LT. The LT may just have a higher load rating. Go to the manufacturer website instead of the tire stores once you pick a tire you like. They have tables with every piece of information you need.

The Duratracs are a better balanced all-around tire.

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