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The Tire Rack's Tire & Wheel Forum
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Old 02-09-2012, 03:06 AM   #1
CSL323
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Exclamation 245/40/18 fits OEM style 135?

Hi guys, my rear tires are both needing replacement. I have OEM Twin-Spoke 135s (below)



I'm ready to buy at a set of Kumho KU31's however I really want to go a little larger on the rear. I'm looking at a set sized at 245/40/18.

I want to avoid a lip around my rim. I've never been a fan, really. I'd like it to be flush...

Below are photos of my brother's 323i.

Here is one with the rear tires on 225s...



And this is the upgrade to 255s...



See that lip?

What size should I look at to avoid that?

Thanks.
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Old 02-09-2012, 03:07 AM   #2
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Old 02-09-2012, 09:43 AM   #3
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The tire will have a taller diameter by 0.7 inch. Of course it will fit the rear 8.5 rim. It's not the right size but it will bead on the rim if thats what you are asking.
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Old 02-09-2012, 02:56 PM   #4
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Deleted my useless post...
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Old 02-11-2012, 05:16 AM   #5
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Wish I could help, but I don't have a clue!

Bump! HTH!
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Old 02-11-2012, 07:18 AM   #6
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Quote:
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Wish I could help, but I don't have a clue!

Bump! HTH!
Hey, thanks anyway buddy!
I hope someone can clear this up for me.

See you 'round!
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Old 02-24-2012, 09:25 AM   #7
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Alrightie so! I went and picked up my wheels (building a website for progress pics on my car rebuild)...

ANYWAY, I've got 225/40/18 on the front, 255/35/18 on the rear while flush. I might just go 265.
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Old 02-24-2012, 02:22 PM   #8
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Are your four rims all the same size?? Or can you go 255/35/18 even though the front has the same rim size?
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Old 02-24-2012, 08:15 PM   #9
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Quote:
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Are your four rims all the same size?? Or can you go 255/35/18 even though the front has the same rim size?
Apparently not, mate...

I have reason to believe my rears are 9 wide... So they must be staggered!

I figure because my brothers car (above) had that major lip around the rim when he put 255s on (his rims were 8.5 all around) . My car is flush with 255s..

I'll have a definite answer in just a little bit.

I'm not sure why I have to get 35s and not 40s on the rear. I didn't think it'd make a serious difference but apparently it's got to do with balancing the front from the back.
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Old 02-25-2012, 10:33 PM   #10
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if those are oem 135s, they should staggered.8 up front and 8.5 rear. that is how mine are anyway.good luck!
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Old 02-26-2012, 05:40 AM   #11
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if those are oem 135s, they should staggered.8 up front and 8.5 rear. that is how mine are anyway.good luck!
Ah fantastic! Thanks for that man, they are OEM.

I have had no professional word about the sizing, nor have I measured, it was more of a guess...

Thanks for confirming it though!
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Old 02-27-2012, 06:35 PM   #12
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Are these the 8" 135m's? 245/40 will have a lip as you call it. I have 235/40's on my fronts and they have a small lip, but not even enough to avoid curb rash. 225's are oe, but have the most slightly stretched look. As for the rears, 255/35 is stock and won't have any lip. Hopefully I didn't mix up any of the profile %'s. Too many numbers.

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Old 02-27-2012, 09:11 PM   #13
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The rear should have 225/35/18 or 245/35/18 on the 8.5" rim. 245/40/18 will be too tall.

The "lip" is not a size type thing, its a brand thing. Some tires have the "lip" some dont, some have a round sidewall some have a square sidewall. You should get the CORRECT tire size for your rim width.

In your case its 225/40/18 on the front which is 8" wide and 255/35/18 (245/35/18 very hand to find and more expensive then 255/35) on the rear 8.5"
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Old 02-27-2012, 11:52 PM   #14
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The rear should have 225/35/18 or 245/35/18 on the 8.5" rim. 245/40/18 will be too tall.

The "lip" is not a size type thing, its a brand thing. Some tires have the "lip" some dont, some have a round sidewall some have a square sidewall. You should get the CORRECT tire size for your rim width.

In your case its 225/40/18 on the front which is 8" wide and 255/35/18 (245/35/18 very hand to find and more expensive then 255/35) on the rear 8.5"
So should I go for 255/35/18 on my rear again?

That's what's already on the rim, but I need to replace both NOW.
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Old 02-28-2012, 08:07 PM   #15
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So should I go for 255/35/18 on my rear again?

.
Yes.
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Old 02-28-2012, 08:12 PM   #16
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different tires sit on the bead of the rim a little differently so its not just the tire size that causes that lip over the rim that you see, that has a lot to do with the tire build itself (of course it will be more dramatic with bigger sizes). Possibly look for pics of the actual tires you want to see how they seat on the rim?
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Old 02-28-2012, 08:52 PM   #17
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different tires sit on the bead of the rim a little differently so its not just the tire size that causes that lip over the rim that you see, that has a lot to do with the tire build itself (of course it will be more dramatic with bigger sizes). Possibly look for pics of the actual tires you want to see how they seat on the rim?
+1; my 275/35 bridgestones sit almost perfectly with my 18x10 rears, but my current pilot super sports of the same size look ever so slightly stretched.
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Old 02-28-2012, 11:17 PM   #18
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Purchased Kumho 255/35/18. Thanks
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