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      08-13-2014, 07:06 PM   #1
Price999
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18" EC7 Apex Wheels - E92 M3 Wheel Width/Tire options

Just purchased an E92 M3 and have decided to remove my stock 19's w/ PS2's and go with an 18" staggered setup. I really prefer the beefy look of 18's compared to 19's.

A couple things that may affect the advice you provide...
- I have EDC and would like to avoid issues with sizing and premature DSC activation.(Not sure if I need to keep exact 20mm F&R difference to avoid this)
- Definitely want to avoid any F&R rubbing on fender liner
- As mentioned, I prefer the meaty tires and not a fan of the stretched look
- Aggressive Fitment but still balanced and not overly done
- prefer not to use spacers
- This is a 2nd car for me and the car is street driven along with the planned track event a few times per year. This 18" wheel/tire setup will be used on street and track
- In the coming months, I'll most likely install a KW Sleeve Over Kit.

I've decided on the Apex EC-7's and it appears some of you have gone with the following option which I think looks great!
F - 9.5" (ET22) 265/35/18
R - 10.5" (ET27) 285/35/18

In researching tire options, the 285 Rears I was considering (in order to keep to 20mm front and rear difference) appear to only be available in 2 decent options... Mich PSS and Hankook R-S3. Am I missing any other options?

If I down size to 275 rears, there are more tires options available.
Mich PSS, Hankook R-S3, Potenza RE-11, Dunlop Direzza ZII.
(I didn't see Advan AD08 in 275 or 285)

My question is, Am I good with the above wheel widths F & R or would you guys recommend EC-7s in other widths/offsets for any reason..
EC-7 - 18x10" (ET25)??
EC-7 - 18x11" (ET25)??

Opinions on 265 Front and 275 Rear vs the 285R and of course Wheel widths that go along with Front and rear?

Any other advice is greatly appreciated.

Sorry for the long winded 1st post.
Great Forum....Thanks in advance!

Clint
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      08-14-2014, 05:57 AM   #2
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You shouldn't have any issues with DSC and/or ABS. I have three sets of wheels/tires for the M3, and two of those are square 18" sets using 275/35-18 all around (like many here), and it causes no problems. What you're thinking of though is diameter differences, not width differences. In any event, so far, there are no issues with not keeping the exact stock diameter stagger.

It's unclear if you're planning on running these 18" all the time or not. If so, then something like the PSS makes sense. If not, then for mostly track/autox the BFG Rival is a great choice. I'd go with 275/35-18 up front and 295/35-18 in back if you want to keep stagger (in this case width and diameter stagger). The 295s will fit, but at what offset on a 10 or 10.5" wheel, I'm not sure, but from what others have posted ~25mm net offset is in the right ballpark. Richbot has a thread with lots of detail about fitment, but in his case using 315/30-18 Hoosiers in back.

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      08-14-2014, 11:10 AM   #3
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Thx for the response Chuck.
Yes, I'll be running these 18's all the time and would need to choose a tire that could go both street and the occasional track event. I didn't consider 275F and 295r. I thought I might have a rubbing issue going that wide in front and out back. Understood on diameter vs width difference and EDC issues.
Anyone else have opinions around best wheel width that compliment these tire size options/choices.
265/35/18
275/35/18

265/35/18
285/35/18

275/35/18
295/35/18
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      08-14-2014, 11:17 AM   #4
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Here are my thoughts:

Front:
265/35/18 is a conservative size that will fit easily with the right wheel offset and should not rub the fender liner. The diameter of this tire is slightly smaller than OEM.

275/35/18 is my go-to size and is the closest to OEM diameter. It is harder to fit so wheel offset and alignment settings become more important. These will rub the fender liner slightly at full lock.

Rear:
285/35/18 is a conservative size that fits easily. It is a smaller diameter than OEM but close enough. This size is available in more tire options - Michelin PSS, Hankook RS3, etc. I would definitely not go with 275's in the rear unless you were running a square set front and rear.

295/35/18 is almost exactly the same diameter as OEM but this is harder to fit. You need a minimum of et25 with a 10.5" or 11" wheel. Anything lower will rub the painted fender. There are fewer tires available in this size. The two that I would consider for a street/track tire are Nitto NT05 and BF Goodrich G-Force Rival

Since you plan to run staggered tires you should run staggered wheels. I would go with 9.5" / 10.5" or 10" / 11". The latter will be more aggressive and harder to fit in some ways but easier in others (tires will be more stretched on wider wheels which helps with fitment).

I have tried many different options and I currently run a 9.5" et22 / 10.5" et25 wheels with 275/295 G Force Rivals on the track. 10" et25 /11" et25 with the same tires on the street.

I would not go with any stagger more than 20mm, I have run 275's front and 285's rear and that works well too. The 265/285 combo with 9.5" / 10.5" apex wheels in the offsets you listed is a plug and play fitment. The same wheels with 275/295 may require some additional negative camber. I always run 275's in the front and like running 295's in the rear for both max grip and great aesthetics.
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      08-14-2014, 11:23 AM   #5
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I should be clear; If it were me I would get the 10/11" wheels and run 275/295 tires. That fitment requires negative camber.

An easy fitment for someone who doesn't want to mess with any OEM alignment settings would be 9.5"/10.5" with 265/285 tires. I would not be happy with 265's in the front but it is a great option and will work well. Tire brands make a big difference as well (same size tire in a different brand can be wider or narrower...). Look at the pics below. Michelin PSS run round, RS3's more square, Rivals are the most square and wide tires I have ever seen.

Here are some pics for you:

9.5 et 17 - 275/35/18 Hankook RS3
10.5 et25 - 285/35/18 Hankook RS3



9.5 et17 -275/35/18 Hankook RS3
10.5 et22 - 285/35/18 Hankook RS3



9.5 et19 - 275/35/18 Michelin PSS
10.5 et19 - 285/35/18 Michelin PSS



10 et18 - 275/35/18 Michelin PSS
11 et18 - 285/35/18 Michelin PSS



10 et25 - 275/35/18 BFG G-Force Rivals
11 et25 - 295/35/18 BFG G-Force Rivals




9.5 et22 - 275/35/18 BFG G-Force Rivals
10.5 et25 - 295/35/18 BFG G-Force Rivals

This setup doesn't rub but it looks like it should. Rivals run super wide... This is why I say et25 is the absolute lowest possible offset for 295's in the rear.



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Last edited by slicer; 08-14-2014 at 11:48 AM.
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      08-14-2014, 11:27 AM   #6
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I'm kinda in the same boat looking for some 18" EC-7s (just got Brembo 380s) & tires for track use. I'm planning on a 10"/275 square setup for rotation purposes.

Good luck with your search!
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      08-14-2014, 11:38 AM   #7
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FWIW, one of my 18" sets is in stock widths (8.5, 9.5 -- TRMotorsport wheels) with net offsets of 26mm front and 17mm rear mounted with BFG Rivals 275/35-18 all around. This is for F-street autocross where stock wheel widths are required. I have no rubbing issues although the fronts are pinched in a bit on 8.5" wheels. This setup is working great for autocrossing, front wear is fantastic (only other allowed mods are larger front sway bar and camber pins removed for max negative camber up front which is about -1.6). I echo comments above on Rivals width -- they carry their section width out to the tread face unlike typical tires which have a sidewall that tapers.

My second set of 18" are Apex ARC-8 in 10"x18" size with Nitto NT-01 in 275/35-18 all around. I have no issues with rubbing with these either -- works great! The wheels are 25mm offset.

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      08-14-2014, 12:39 PM   #8
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Clint,

Because you stated you would run on these wheels all the time, would occasionally take them to the track, and you want to avoid any rubbing, I would recommend the following:

18x9.5' ET22 Front with 265/35/18 Michelin PSS
19x10.5" ET22 Rear with 285/35/18 Michelin PSS

If you start going to the track more often, or if these become a dedicated set of track tires, then more aggressive tires and/or wider sizes could be used in the future.

Some people experience rubbing with 275's up front, but that's usually on the 10" wheels and it's very only minor contact on the plastic liner (no metal fender issues). Avoiding that rub completely means you have to run a conservative setup like the one recommended above. If you start going to the track more often you'll quickly learn that a small mark or hole in a cheap, plastic, replaceable fender liner is a very small price to pay for added grip/speed.
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      08-14-2014, 01:06 PM   #9
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Quote:
Originally Posted by Eddy@ApexRaceParts View Post
Clint,

Because you stated you would run on these wheels all the time, would occasionally take them to the track, and you want to avoid any rubbing, I would recommend the following:

18x9.5' ET22 Front with 265/35/18 Michelin PSS
19x10.5" ET22 Rear with 285/35/18 Michelin PSS

If you start going to the track more often, or if these become a dedicated set of track tires, then more aggressive tires and/or wider sizes could be used in the future.

Some people experience rubbing with 275's up front, but that's usually on the 10" wheels and it's very only minor contact on the plastic liner (no metal fender issues). Avoiding that rub completely means you have to run a conservative setup like the one recommended above. If you start going to the track more often you'll quickly learn that a small mark or hole in a cheap, plastic, replaceable fender liner is a very small price to pay for added grip/speed.
Good advice
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      08-14-2014, 08:45 PM   #10
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Thanks for the great responses guys
Damn Slicer, looks like you've been around the block a few times regarding wheel/tire fitment...thanks for sharing your knowledge!!
Eddy, you're probably right. I should go with something plug and play since this is my first setup...looks like I'll be going with the EC-7's
F - 18x9.5" ET22 265/35/18
R - 18x10.5" ET27 285/35/18
Guess the only thing left is to choose either the Hankook PS-3 or Mich PSS and of course Wheel color. On the fence with Black or Anthracite to pair with Space Grey, decisions...decisions
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      08-15-2014, 02:50 AM   #11
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I don't mean to thread jack, but I have a similar question for track setup. I am planning to go to track for the first time, currently I have KW V3 (non clubsport) and 380mm Stoptech, planning to use EC-7 in square 18x10 +25 setup with 275/35 tires. Currently I don't have any gap on my te37sl 18x9.5/10.5 +22 265/35 285/35. Would I be able to get away with the track setup?
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