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Old 11-27-2019, 04:44 PM
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315x70x17 VS. 35x12.5x17

Hello all, happy holidays and safe travels! I have a question, I'm looking at getting BF Goodrich KM3's in size 315x70x17, or 35x12.5x17. The 315's are about $20 less than the 35's per tire. I know the 35 is a hair bigger (taller, barely wider). Is it smart to go with the 35's or 315's. I'm coming up from a 305x70x17 with 4.88's installed. Any advice will help

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Old 11-27-2019, 05:22 PM   #2
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I wonder if they are as tiny as the 315 KO2's.
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Old 11-27-2019, 05:25 PM   #3
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Hello all, happy holidays and safe travels! I have a question, I'm looking at getting BF Goodrich KM3's in size 315x70x17, or 35x12.5x17. The 315's are about $20 less than the 35's per tire. I know the 35 is a hair bigger (taller, barely wider). Is it smart to go with the 35's or 315's. I'm coming up from a 305x70x17 with 4.88's installed. Any advice will help
What rims? I am pretty sure the 315s can be mounted on stock rims (per the manufacturers minimum rim width spec). So placed like Americas Tire will mount em no problem, the same cannot be said for the 35s those usually need an 8" rim i believe. If you already have aftermarket rims, I would personally choose the 35 because it seems BFGs are always a little smaller than other brands, but thats just me...
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Old 11-27-2019, 05:34 PM   #4
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Visually, you will not be able to tell the difference... They are both E load rating, so it's silly for them to make both. If one was a D load tire, I'd suggest you buy that one.... At this point, save the $$.
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Old 11-27-2019, 07:43 PM   #5
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Generally the 315 is just a metric version of the 35. Virtually canít tell the difference in physical size. Most tire manufacturers that offer both only do so to differentiate between a D rated and E rated version.


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Old 11-27-2019, 11:57 PM   #6
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See this thread which shows the difference between the two using KO2s.
https://www.wranglerforum.com/f27/31...2-1616601.html
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Old 11-30-2019, 10:50 PM
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It's such a minor difference, don't know which way to go. Sounds silly, don't know why the heck bfg would make both of them.
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Old 12-01-2019, 11:16 AM   #8
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It's such a minor difference, don't know which way to go. Sounds silly, don't know why the heck bfg would make both of them.
For a $20/tire difference, I know which way I'd go!
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Old 12-01-2019, 03:50 PM
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For a $20/tire difference, I know which way I'd go!
Which is!!!????....
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Old 12-02-2019, 02:08 AM   #10
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I run 315 and spec sheet says 34.4.

When I look at the spec of the 35" it says 34.5...
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Old Today, 03:49 PM
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I run 315 and spec sheet says 34.4.

When I look at the spec of the 35" it says 34.5...
How do you like the feel when driving? Running a little slow? Would you go 315's over the 35's if money was no issue? The price difference is about $20 big ones. This choice is annoying, I wish they didn't offer both!
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Old Today, 04:06 PM   #12
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The main thing with the 35 is that it says "35". The two tires, if they are also the same load rating, will drive exactly the same for all intent.
I would pick the cheaper one unless you want to pay $20 a tire for that "35" on the sidewall, because that would be what you are doing.
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Old Today, 04:31 PM   #13
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Look at the weight difference. In the MT's the 35's are about 9 pounds heavier.

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