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      04-17-2013, 12:59 AM   #1
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40 vs 45

I wanted some advice on tires for 18x8.5 ET 35 front 18x9.5 ET 43 rear. This will be for daily driving; no tracking. Weather is So Cal. I'm trying to balance comfort, performance, and longevity. Tires will most likely be Hankook V12 evo.

The tire sizes I'm contemplating are as follows:

SET 1
235x40 18 front
265x35 18 rear

SET 2
235x45 18 front <--- doesn't exist
265x40 18 rear

I'm sure many have experienced the SET 1 sizes, but has anyone tried the SET 2?

Last edited by Number; 04-18-2013 at 05:13 AM.
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      04-17-2013, 01:23 AM   #2
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Set 2 all the way but would go with pilot super sports, also rear offset for the EC-7's are ET43.
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      04-17-2013, 02:11 AM   #3
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Quote:
Originally Posted by M.Suka View Post
Set 2 all the way but would go with pilot super sports, also rear offset for the EC-7's are ET43.
Thanks for the correction. My jumbled brain was thinking OEM.

Why would you go with SET 2?
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      04-17-2013, 02:27 AM   #4
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lol because your brain is now thinking it is 19" set up. Follow the 18" OEM diameter so opt 2 would be closer.
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      04-17-2013, 01:12 PM   #5
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Quote:
Originally Posted by Number View Post
Thanks for the correction. My jumbled brain was thinking OEM.

Why would you go with SET 2?
Taller profile tire will give you more tire height for added comfort and a wider contact patch for added performance, it will also fill in the wheel gap better.
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      04-17-2013, 01:13 PM   #6
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You said longevity, v12's arent exactly longevity tires.
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      04-17-2013, 04:10 PM   #7
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I just realized that a 235x45x18 doesn't exist in the Hankook V12s.
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      04-17-2013, 04:59 PM   #8
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So now I'm contemplating 245x40 18 front and 265x40 18 for the rears.
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      04-17-2013, 05:12 PM   #9
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Quote:
Originally Posted by Number View Post
So now I'm contemplating 245x40 18 front and 265x40 18 for the rears.
That would be a 25.7" diameter on the front and 26.3" on the back (2.5% difference). I wouldn't do anything more than 1% difference.

There are not a lot of 245/265 solutions. You might as well just go square at that point. Can do 235 with either 265 or 275, or 245 with 275...

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      04-17-2013, 05:16 PM   #10
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Quote:
Originally Posted by M.Suka View Post
Taller profile tire will give you more tire height for added comfort and a wider contact patch for added performance, it will also fill in the wheel gap better.
Exactly. I just got Michelin Pilot Super Sports in 235/40 and 265/35 (19 inchers) for my xdrive, since I live in MA and I don't have any drop options (or interest in dropping, even if I had options).

Matt
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      04-17-2013, 05:30 PM   #11
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Quote:
Originally Posted by Waterbelly View Post
Exactly. I just got Michelin Pilot Super Sports in 235/40 and 265/35 (19 inchers) for my xdrive, since I live in MA and I don't have any drop options (or interest in dropping, even if I had options).

Matt
Do you have pictures? That's the setup I was planning on since 245s seem to not match well in height with 265s. Any issue rubbing? I have the sportline so my car is slightly lower, not sure if it's enough to affect anything though.
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      04-17-2013, 05:59 PM   #12
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Pilot super sports will be the best tire you can buy, but if your looking for a cheaper price on tires go with the Sumitomo HTR Z3's in 235 45 18 and 265 40 18 you can find them at tire rack.com
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      04-17-2013, 07:00 PM   #13
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Quote:
Originally Posted by M.Suka View Post
Pilot super sports will be the best tire you can buy, but if your looking for a cheaper price on tires go with the Sumitomo HTR Z3's in 235 45 18 and 265 40 18 you can find them at tire rack.com
I guess "best" is a very subjective term. A lot of people prefer the Continental DW, which are cheaper and what was suggested to me by a sales rep when I was looking at the Pilot SS. Neither are going to be as good as dedicated track tires, but then again they'll last a lot longer than those tires and be cheaper.
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      04-18-2013, 02:36 AM   #14
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Quote:
Originally Posted by Waterbelly View Post
That would be a 25.7" diameter on the front and 26.3" on the back (2.5% difference). I wouldn't do anything more than 1% difference.

There are not a lot of 245/265 solutions. You might as well just go square at that point. Can do 235 with either 265 or 275, or 245 with 275...

Matt
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      04-18-2013, 05:28 AM   #15
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So for the 18" Hankook V12s, these are my 3 size options. I'm most leaning towards Option 2 but I'm hoping the tires don't look too fat on the wheel.

Option 1 (oem)
225x45 front - 25.9" diameter
255x40 rear - 26.0" diameter

Option 2
245x40 front - 25.7" diameter
275x35 rear - 25.6" diameter

Option 3
235x40 front - 25.4" diameter
265x35 rear - 25.3" diameter

Option 4 (fatty)
245x45 front - 26.7" diameter
275x40 rear - 26.7" diameter
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      04-18-2013, 05:39 AM   #16
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Either option 1 or 4
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      04-18-2013, 03:04 PM   #17
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Quote:
Originally Posted by M.Suka View Post
Either option 1 or 4
So I went with Option 4. Hope it doesn't look too 4x4!
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      04-18-2013, 09:56 PM   #18
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Post pics when you get them on I would love to see how it looks as I plan on doing the same set up.
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