ApexRaceParts wroteNice car!Like many of you right now, we're dreaming of better days...
APEX Project92
SM-10's in Satin Black
Front: 18x10" ET25 with 275/35-18 Nitto NT01
Rear: 18x11" ET44 with 305/35-18 Nitto NT01
15mm rear spacers
JRZ Motorsport 1132 Dampers with external reservoirs
Camber: F. -3.5º / R. -2.0º
AP Essex CP9668 6pot 372mm BBK
and more
Full feature coming soon.
ApexRaceParts wroteAny spacers? What tire measurements do you use?This aggressive staggered fitment is right at home on Sven's track-ready M3!
Big thanks to Sven (@spacegrey.m3 on Instagram) for sending us these photos of his car! These wheels were sourced with the help of CM Motorsport (@cm_motorsport), one of our premier dealers in Switzerland.
APEX wheel info:
- Front: 18x9.5" et22 ARC-8s in Satin Black
- Rear: 18x10.5" et27 ARC-8s in Satin Black
Modifications:
- Lowered on KW coilovers
Photos by @nikkpics_
Rochen_00 wroteThanks for the questions!Any spacers? What tire measurements do you use?
Thanks Apex
[header="Another beautiful car from CM Motorsport!"][/header]
RaceBear wroteThanks for the question, sounds like a killer build! We run AP Essex Brakes on several of our own track/race cars, including the 6 pot 372mm CP9668 BBK on our E92 M3. Fantastic brakes. Our 18” EC-7, SM-10 and FL-5 flow formed wheels, as well as our new ARC-8R and EC-7R forged wheels for the E9X M3 will all clear those brakes no problem.Hi, I am in the middle of an E92 M3 build focusing on endurance racing and am looking for some info on wheel and tire fitment. I am looking for a square setup, I have MOTON 3W coilovers, AP racing 378mm BBK on the front, stock rear brakes. I want to run continental 305/680/18 tires but don't see many setups with that big a tire, is it possible, what would you recommend? Thanks
Dr Ed wroteSome of our customers do choose to run 18x9.5s all the way around! Our 18x9.5 ET22 is a direct fit for this application with either 265/35-18s or 275/35-18s.Has anyone ran a setup of 18x9.5 square? I know it's more common to run 10"+ wide wheels. But I was wondering if anyone had photos of this setup.
ApexRaceParts wroteTomThanks for the question, sounds like a killer build! We run AP Essex Brakes on several of our own track/race cars, including the 6 pot 372mm CP9668 BBK on our E92 M3. Fantastic brakes. Our 18” EC-7, SM-10 and FL-5 flow formed wheels, as well as our new ARC-8R and EC-7R forged wheels for the E9X M3 will all clear those brakes no problem.
In regards to your Moton suspension, can you tell us what front spring configuration you are running? Ex. 5” main 2.25” ID springs with helper springs. Stack height and the overall suspension silhouette matters when it comes to running wide wheel and tire configurations like 10.5” or 11” square.
What tire compound will you be running, and have you taken into consideration the endurance class wheel & tire rules that you are building the car to compete in?
305/680-18 is going to be too tall with a diameter of 26.8”, and would result in serious clearance issues up front. These tall tires are commonly used on Mustangs and Camaros. If your goal is to run 305 square, then 305/645-18 is more appropriate for the E9X chassis.
OEM Benchmark
F) 245/40-18 → 25.7”
R) 265/40-18 → 26.3”
Square tire configurations that work for a track/race E9X M3:
275/35-18 → 25.6”
285/30-18 → 24.7” (short, but they work)
285/35-18 → 25.9” (About as tall as you can go up front without major modifications)
295/30-18 → 25”
305/645-18 → 25.4”
305/660-18 → 26” (Tall. Works on an F8X & might be possible on E9X M3)
315/30-18 → 25.4”
In terms of aggressive 18” wheel fitments to support the compounds listed above, we have two good options. Which is best for you will depend on a number of things like your suspension configuration, which tire size and compound you choose, and how the rest of the car is developed.
Option 1: 18x10.5” ET22 / ET27 square - Available in all APEX designs
This is the most common rotatable square setup for more serious E9X M3 track/race cars, as the 10.5” wheels provide superior sidewall support over the 10” wheels commonly found on street/weekend warrior HPDE cars. Most drivers pair these 10.5” wheels with either 275/35-18 tires to maximize sidewall support, or 295/30-18 depending on desired compound (not every tire comes in every size), driver experience, class rules, etc.
Our original ARC-8 and EC-7 flow formed designs are 18x10.5” ET27 which will require spacers up front to clear the struts, however, our newer SM-10 and FL-5 flow formed designs as well as our brand new EC-7R and ARC-8R forged designs are offered in 18x10.5” ET22 which were engineered specifically for the E9X M3.
Since ET22 is the optimal offset for a 10.5” wheel, you can run up to 295’s without the need for spacers as long as the spring stack height is appropriate (shorter 5” main springs). This wheel fitment will require negative camber up front, but these are track/race cars so that is par for the course. You can also run the 305/645-18’s on these 10.5” wheels with added negative camber, but I think most drivers would prefer running 11” wheels for proper sidewall support, especially since slicks run quite wide.
Option 2: 18x11” ET25 square - Available in EC-7 design only
This setup is typically reserved for hard core race cars and W2W racers planning to run 295, 305 or 315 compounds where maximum sidewall support is desired. Naturally, the fitment requires a little more love in the form of very aggressive camber specifications, rear fender rolling/pulling and possibly some inner clearancing work with the liners, etc. Up front, even the slimmest of suspension designs paired with short 5” springs will need spacers to clear the struts due to the sheer width of the wheel, and the spacer thickness you’ll need will depend on contributing factors like spring stack height and tire size/model (ballpark 10mm - 15mm spacers will be needed).
I hope this was helpful. Please let me know if you have any other questions!
-Tom & the BMW team
StripclubDJ wroteWas your car previously on Fikse wheels?Arc8R brushed silver
18x10 + 25
18mm front spacer
20mm rear ( rolled quarters)
-3.6 front , -2.0 rear
Jrz Motorsport 1132
275/35 nexen sur4g
RaceBear wroteSounds good! Let us know if you have any questions in the meantime!Tom
Thanks for the quick and detailed reply, you made a lot of sense, I have 2.25 5" springs on the front, no helper springs right now, but probably need them. I have been running an AIX mustang that uses the 305/680 tires so I was trying to use some of those up but not if it doesn't make sense. I am hoping to eventually run slick tires but may not have that option early in this build, will start out running ST3/E0 NASA classes. I need to digest this a little bit but will be in touch, trying to race in the 6 hour at Utah in AUG but got a lot to do.
Thanks
RaceBear wrotePM Sent!Tom
I am thinking of getting the 18X10.5 ET22 in the EC7R, can I get a quote for 6 wheels shipped to 89703 and how long would it take to get them.
Thanks
