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      07-29-2013, 08:56 AM   #1
crash32
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Concerns about going with 255's up front...

I am getting my 19" ZCP wheels this week and I had initially planned on going with 245's in the front and 275's in the back, but I heard from several people that it is not recommended to have 30mm of a difference between the front and the rear so now I would like to go to 255's for the front.
The problem is I have heard of a few people that have fitment problems/rubbing problems with 255's up front. Is this an issue for only a very few people running 255's up front or is this a common problem?

Thanks
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      07-29-2013, 05:29 PM   #2
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drop to 30 series on the 255 and it fits, as does 265/30/19 and 275/30/19 up front on the ZCP wheels..

I wouldn't worry about the 245 / 275 delta being bad.
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      07-29-2013, 06:02 PM   #3
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My belief is the following;
255/35/19 on a 9" rim will rub but 255/35/19 on a 9.5/10" rim will not rub because the tire is being stretched, thus, overall removing a tad bit of the diameter.

At the end of the day everything comes down to the offset of the wheel and camber adjustment. My question here is are you putting these on a 335i? M3 NON ZCP or M3 ZCP?


If I'm wrong please correct me someone.
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      07-29-2013, 06:10 PM   #4
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What wheels are you putting these on???? OEM ZCP's or aftermarket (I saw you post previously about getting aftermarket ZCP's which would likely have a different offset from OEM). 255/35/19 is a very common size on OEM ZCP wheels and this same question has been asked tons of times. Do not go to a 255/30/19 as that is 1" too small in diameter. You would be better off with a 245/35/19 if you have major concerns about rubbing. The only rubbing you may have with 255/35/19 on OEM ZCP wheels is at full lock which is not a big deal. Note that some tires run wide (such as the Yokohama AD08's) which can make rubbing a higher possibility. I personally wouldn't hesitate for 1 second to run 255/35/19 and 275/35/19's AD08's on OEM ZCP wheels. I would however not freak out if there were a tiny amount of rubbing at full lock.

Thread dedicated to tire rubbing (sticky in wheel and tire forum): http://www.m3post.com/forums/showthread.php?t=522139
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      07-29-2013, 06:18 PM   #5
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I've been running 255/35 for a long time without any rubbing (9" ET22 wheel). Do NOT go with 255/30.
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      07-29-2013, 06:47 PM   #6
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Simple answer: some will rub on 255's, some won't. Even identical cars have slight difference in suspension tolerances.

I wouldn't go with a 30 profile. That sidewall is anemic.
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      07-29-2013, 06:53 PM   #7
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I've ran 265 and 275 up front w/o rubbing, I don't think 255 usually rubs.
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      07-29-2013, 06:58 PM   #8
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255/35 on ZCP car with ZCP wheels and I only rubbed (during turning) when i tried to do 15mm spacers.
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      07-29-2013, 07:07 PM   #9
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Quote:
Originally Posted by crash32 View Post
I am getting my 19" ZCP wheels this week and I had initially planned on going with 245's in the front and 275's in the back, but I heard from several people that it is not recommended to have 30mm of a difference between the front and the rear so now I would like to go to 255's for the front.
The problem is I have heard of a few people that have fitment problems/rubbing problems with 255's up front. Is this an issue for only a very few people running 255's up front or is this a common problem?

Thanks
You will not rub if you don't use any spacers. With the stock 31mm offset, you will be just fine. Also, the rubbing is very slight, and also very tire dependent. A square sidewall tire will be more inclined to rub. There will be no issue with using a 245/275 set-up, especially if you use spacers on the front and increase the front track width relative to the rear.

I would recommend using 245/275 with a 12 or 15mm front spacer.
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      07-29-2013, 11:26 PM   #10
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Quote:
Originally Posted by signes View Post
I've been running 255/35 for a long time without any rubbing (9" ET22 wheel). Do NOT go with 255/30.
+1 same specs as above with Michelin PSS tires. Stock ride height, stock alignment specs. No rubbing whatsoever.

Lowered to 1.5 finger gap, kept alignment specs stock (alignment pins in tact) no rubbing. Added a 5mm spacer (effectively ET 17) and the wheels just barely touch the inner fending liners in the rear of the liner.

I would say you could run oem ZCP with a 12mm spacer (ET 31 - 12 = 18) with 255's and no issues other than very very minor rubbing. You may be able to heat up the liners and move them out of the way enough that you wouldn't rub.
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      07-29-2013, 11:53 PM   #11
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Just my two cents here..I am running 19 X 9 ET20 with 255/35 and no rubbing. Although not OEM ZCP but just my aftermarket setup. Stock ride height as well.
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      07-30-2013, 08:05 AM   #12
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Thanks for the wealth of information. I tried to search, and while I found a lot of information I did not find exactly what I was looking for.
This is for a E92 M3 that is a NON ZCP M3. I am getting the Avant Garde 19x9 and 19x10 wheels. I was planning on going with a 35 profile.... not 30. The tires that I will be using are Michelin Pilot Super Sports.
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      07-30-2013, 08:40 AM   #13
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I assume you are getting Avant Garde M359 since you wrongly called it ZCPs. You need to specify what offset you are getting, since the fronts come in two offsets. et18 and et35.

I have no actual experience fitting these, but Tim944s says 19x9 et20 works, so et18 might work since it's only 2mm away.
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      07-30-2013, 09:13 AM   #14
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My 2 cents... 255/35/19 PSS fronts... no rubbing on 19x9.5 ET28 wheels... 2008 non-ZCP E92 M3 with stock EDC suspension. Good luck!
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      07-30-2013, 10:04 AM   #15
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Quote:
Originally Posted by crash32 View Post
Thanks for the wealth of information. I tried to search, and while I found a lot of information I did not find exactly what I was looking for.
This is for a E92 M3 that is a NON ZCP M3. I am getting the Avant Garde 19x9 and 19x10 wheels. I was planning on going with a 35 profile.... not 30. The tires that I will be using are Michelin Pilot Super Sports.
Offsets? Why not buy OEM ZCP wheels?
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      07-30-2013, 12:02 PM   #16
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255/35/19s fit fine on the OEM ZCP wheels, the issue is if you go with the AG359s then you may have some issues. The issue is not width but height, you go over 26" tall and you may have some issues with the ET18 front wheels of the AG. If you go with OEM ZCP front wheels they are a ET31mm and they fit fine with 255.35.19. I have had 255.35.19s on my car since new. I have had Nitto Invos and now Contisport Contact5Ps and both haven't rubbed once.

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      07-31-2013, 01:15 AM   #17
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Not to hi-jack the OP's thread negatively but you guys are starting to concern me since I'm about to mount 19x9.5 (+23) on PSS 255/35 with stock suspension (EDC). Those tires are more round than square? I've only seen pics of those tires, not in person yet. I'm not concerned with the rears since they'll be 19x10.5 (+25) on 275/35. Thanks!
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      07-31-2013, 08:35 AM   #18
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Hey guys, I hope you forgive me but I am not sure exactly how to calculate offset. I am not even sure what it is. Its my understanding that it is the distance of the back of the wheel to the center of the wheel????
The Avant Gardes that I got are et 18 for the front and et 25 for the rear..... that do those numbers mean???
Thanks for the help guys
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      07-31-2013, 08:38 AM   #19
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Hey guys can you help me with what exactly the offset means? Its my understanding that it is how deep the center of the wheel is in relationship to the back of the rim. How does this affect fitment. The wheels that I got are et 18 for the front and et 25. What does the et mean and those numbers?
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      07-31-2013, 09:43 AM   #20
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I have 255/35 front and 295/30 rear AD08...on my third sets. no problem so far.


Quote:
Originally Posted by crash32 View Post
I am getting my 19" ZCP wheels this week and I had initially planned on going with 245's in the front and 275's in the back, but I heard from several people that it is not recommended to have 30mm of a difference between the front and the rear so now I would like to go to 255's for the front.
The problem is I have heard of a few people that have fitment problems/rubbing problems with 255's up front. Is this an issue for only a very few people running 255's up front or is this a common problem?

Thanks
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      08-02-2013, 10:01 PM   #21
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Quote:
Originally Posted by crash32 View Post
Hey guys can you help me with what exactly the offset means? Its my understanding that it is how deep the center of the wheel is in relationship to the back of the rim. How does this affect fitment. The wheels that I got are et 18 for the front and et 25. What does the et mean and those numbers?
The AG M359 front ET-18 wheel will stick out 13mm (over 1/2") more vs. the OEM ZCP front ET-31 wheel. Its this combination of wheel diameter and aggressive offset that can cause a 255/35/19 tire to rub. Also depends on the brand, some 255/35/19 can be a 26.1" tall tire, while some are 26". Believe it or not that could be the difference between rubbing and not rubbing.

Dave
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      08-02-2013, 10:20 PM   #22
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Quote:
Originally Posted by crash32 View Post
I am getting my 19" ZCP wheels this week and I had initially planned on going with 245's in the front and 275's in the back, but I heard from several people that it is not recommended to have 30mm of a difference between the front and the rear so now I would like to go to 255's for the front.
The problem is I have heard of a few people that have fitment problems/rubbing problems with 255's up front. Is this an issue for only a very few people running 255's up front or is this a common problem?

Thanks
The M3 GTS has 30mm difference 255/35/19 f 285/30/19 r
I myself plan on running 245/35/19 f 275/35/19 r just waiting on my wheels to come in next week.
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