18” Staggered Track Setup Official Thread

[5thgear]

Originally Posted by Dranter

Your fronts are not the recommended Apex setup i believe. They usually do 18x10 for fronts.

They even recommend 18x9.5 front to keep options open for front aftermarket coilovers as some have wider spring. 18x10 works for OEM setup and some aftermarket coilovers from what I heard.

[adc]

Originally Posted by Dranter

Your fronts are not the recommended Apex setup i believe. They usually do 18x10 for fronts.

I have 10.5” fronts with +25 offset, EDC suspension with GC plates, no issues whatsoever. Compression on lock (steep driveway), hard track, all good.

Went that way in case there will be an option for more tire at the front...

[helothere]

Originally Posted by Dranter

Your fronts are not the recommended Apex setup i believe. They usually do 18x10 for fronts.

Not recommended I know, but they ran out of 18x10 and had 10.5 in stock,
so might as well give them a try.
I don't think it should be an issue too much, since 9.5 +22 I had plenty of room available both inside and out.

Wheels just got here last night, so as soon as my new tires arrive next week we shall see if 10.5 width is good or not.

Originally Posted by 5thgear

They even recommend 18x9.5 front to keep options open for front aftermarket coilovers as some have wider spring. 18x10 works for OEM setup and some aftermarket coilovers from what I heard.

9.5 is too narrow for my tire choices. definitely works without issue though.
even 10 is too narrow to be honest.

Originally Posted by adc

I have 10.5” fronts with +25 offset, EDC suspension with GC plates, no issues whatsoever. Compression on lock (steep driveway), hard track, all good.

Went that way in case there will be an option for more tire at the front...

good to hear 10.5 fronts works for you, i am sure i won't have any issues as well.... in case i need more clearance inside, i already have spacers ready.

[Kung Fu English]

Originally Posted by rx7gslse

No, but the 40series 18s have the same Diameter as my stock ZCPs.. I will have to look up the exact difference, but it's a fraction of an inch tops

Stock front 26.3". -Rs4 26.2" diameter

Stock rear 26.8" -rs4 27.1" diameter

Wanted to go 275/40 fronts, but I chickened out without anyone else running the Rs4 yet, I wasn't sure how close it'd be with the extra 1/2" in width. After running these, it looks like it'll work... close enough I'm gonna try it for my next set.

Trying to maximize the TTSA for this setup to get the most I can from the tires...
http://www.motoiq.com/MagazineArticl...RFORMANCE.aspx

My goal... Smallest wheel diameter to clear the brakes, largest diameter widest you can fit and keep balance. Our cars are front tire limited on track imho, (yes, you can overpower the rears, but I'm talking balance) so a 275/305 would be about perfect, but couldn't find a 305 18 outside of a pure track tire... so 295 it was!

I think you have the right idea. The only thing I dislike about 275/35/18 is the shorter diameter from stock. It's not great for straight line acceleration. I don't think the 265 or 295/40s (can't remember which one) were available when I did my ordering last year so the 265-295/40/18 stagger wasn't an option for me. I wish it was.

[CPWINCH]

Originally Posted by Kung Fu English

I think you have the right idea. The only thing I dislike about 275/35/18 is the shorter diameter from stock. It's not great for straight line acceleration. I don't think the 265 or 295/40s (can't remember which one) were available when I did my ordering last year so the 265-295/40/18 stagger wasn't an option for me. I wish it was.

I have 18x10 and 18x11 and I am considering 275-305/35 R888R or 275-295/40 Hankook RS4. The latter sounds awesome becasue of the beef but I dont know how the taller sidewalls would affect performance. I did the math and the hankooks are only about 8mm taller than stock sizes. What would be a better choice?

[Expert@ApexWheels]

As many other users have stated, we would recommend the following as the widest staggered fitment for the F8x. This fitment can be used without the need for spacers, fender work, or special alignment:

Front: 18x10" ET25 - 275/35-18
Rear: 18x11" ET44 - 305/35-18 (295/35-18 tire can be used here as a substitute!)

If you are running a KW, Ohlins, or any suspension system with a conical style spring, we would recommend a 5mm spacer up front as well as some negative camber to aid in fender clearance.

-Max

[SYT_Shadow]

Originally Posted by Expert@ApexRaceParts

As many other users have stated, we would recommend the following as the widest staggered fitment for the F8x. This fitment can be used without the need for spacers, fender work, or special alignment:

Front: 18x10" ET25 - 275/35-18
Rear: 18x11" ET44 - 305/35-18 (295/35-18 tire can be used here as a substitute!)

If you are running a KW, Ohlins, or any suspension system with a conical style spring, we would recommend a 5mm spacer up front as well as some negative camber to aid in fender clearance.

-Max

Why not the 10.5 up front? Unless you have a strange suspension it should fit perfectly

A BFG R1 tire fits much better on a 10.5 than a 10.

///Mobbin

[SYT_Shadow]

Originally Posted by CPWINCH

I have 18x10 and 18x11 and I am considering 275-305/35 R888R or 275-295/40 Hankook RS4. The latter sounds awesome becasue of the beef but I dont know how the taller sidewalls would affect performance. I did the math and the hankooks are only about 8mm taller than stock sizes. What would be a better choice?

I've run a set of R888R in 295 on a 10.5 rear. It has less traction than a 275 RE71. I hate these tires. Oh, and loud as hell on the highway

With 10/10.5 fronts and 11 rears I'd run the 275/35 RE71 front and the 285/30 rear

[jww///95]

I know this is a staggered thread but the idea of a square 10.5 is mmmmmmmmmmmmmm

[SYT_Shadow]

Originally Posted by jww///95

I know this is a staggered thread but the idea of a square 10.5 is mmmmmmmmmmmmmm

10.5 square fits perfectly in the E9X M3, for the F8X I would want an 11" rear

[adc]

Originally Posted by SYT_Shadow

10.5 square fits perfectly in the E9X M3, for the F8X I would want an 11" rear

For the F8x I would want a 10.5” or 11” front that allows me to run 305 at the front. 305 square would be ideal for me.

[SYT_Shadow]

Originally Posted by adc

For the F8x I would want a 10.5” or 11” front that allows me to run 305 at the front. 305 square would be ideal for me.

but does the 11" fit ok? That's the question

[adc]

Originally Posted by SYT_Shadow

but does the 11" fit ok? That's the question

Probably not unless it has a different offset than what I have (I have 25 offset). And maybe some serious camber would be needed too.

[///Mobbin]

Originally Posted by adc

Probably not unless it has a different offset than what I have (I have 25 offset). And maybe some serious camber would be needed too.

Do you think a 10.5 et22 would need camber to fit? Wasn't planning to run camber plates right away.

[SYT_Shadow]

Originally Posted by ///Mobbin

Do you think a 10.5 et22 would need camber to fit? Wasn't planning to run camber plates right away.

The 10.5 I have on the E9Xs is ET27. but I'm not sure how that translates to the F8X chassis

[CPWINCH]

Originally Posted by SYT_Shadow

I've run a set of R888R in 295 on a 10.5 rear. It has less traction than a 275 RE71. I hate these tires. Oh, and loud as hell on the highway

With 10/10.5 fronts and 11 rears I'd run the 275/35 RE71 front and the 285/30 rear

That recommendation is pretty silly. The overall diameter is so much different than stock. Running significantly larger sidewalls in the front than the rear

[CPWINCH]

Originally Posted by ///Mobbin

Do you think a 10.5 et22 would need camber to fit? Wasn't planning to run camber plates right away.

I put on a 18x10 ET 15 with a 285 hoosier slick before. I have 2.5 degree of camber and it poked a lot.

[helothere]

Originally Posted by ///Mobbin

Do you think a 10.5 et22 would need camber to fit? Wasn't planning to run camber plates right away.

Will report back in about week or so,
tires finally came in so will be mounting them onto new 10.5 et22 for front and then do alignment / corner balance again hopefully next week.

i don't think it should be too much of an issue, but i do think you'll definitely need some camber to clear no problem

[adc]

Originally Posted by ///Mobbin

Do you think a 10.5 et22 would need camber to fit? Wasn't planning to run camber plates right away.

I’ll take a pic this Monday at Watkins Glen, with my 25 front offset and 2.5 camber. From memory it should fit.

[SYT_Shadow]

Originally Posted by CPWINCH

That recommendation is pretty silly. The overall diameter is so much different than stock. Running significantly larger sidewalls in the front than the rear

Which matters how when you run with dsc off?

Like everything, tire sizing is a trade off of many variables

[adc]

Originally Posted by SYT_Shadow

Which matters how when you run with dsc off?

Like everything, tire sizing is a trade off of many variables

Could affect ABS and EBD.

My local race shop is dead against anything that doesn’t keep the front to rear diameter stagger. Others here on the forum report no issues at all...

[Kung Fu English]

Originally Posted by SYT_Shadow

Which matters how when you run with dsc off?

Like everything, tire sizing is a trade off of many variables

It's not about that it's about small diameter rears will get less straight line grip too. Seems silly.