BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

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      11-06-2018, 01:27 PM   #23
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Quote:
Originally Posted by Gangplank View Post
Just out of curiosity why not 17x8 et42 or et45 square?
Then you are limited to 235/40/17 all round.

I believe you can run as high as ET 47 all round with 17 x 8s, if that is correct, you have the ability to pick up some used E36, E46, E90, Z3 and some Z4 wheels even (if you find 17x8s ET 47s).

But 245 are going to be pushing it (IMO) on 8" wide wheels, some people get away with it, and it probably depends on the tire brand.
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      11-06-2018, 01:41 PM   #24
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Originally Posted by Zombie_Head View Post
Quote:
Originally Posted by Gangplank View Post
Just out of curiosity why not 17x8 et42 or et45 square?
Then you are limited to 235/40/17 all round.

I believe you can run as high as ET 47 all round with 17 x 8s, if that is correct, you have the ability to pick up some used E36, E46, E90, Z3 and some Z4 wheels even (if you find 17x8s ET 47s).

But 245 are going to be pushing it (IMO) on 8" wide wheels, some people get away with it, and it probably depends on the tire brand.
Agree. As I was researching more I noticed that the Firestone Firehawk indy500 says you can fit it in an 8" rim, however it likely won't perform as well as an 8.5".
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      11-06-2018, 01:43 PM   #25
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Originally Posted by Gangplank View Post
Agree. As I was researching more I noticed that the Firestone Firehawk indy500 says you can fit it in an 8" rim, however it likely won't perform as well as an 8.5".
Hence why i, and others, aim for 8.5" wheels. So we can mount 235 all round and if we would like to install 245s in the future, wheels are good to go.
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      03-01-2019, 09:44 PM   #26
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What ended up being the consensus here? Will a 17x8.5 ET40 fit without rear fender work with narrowish 245s? I have plenty of camber up front so I am less concerned about the fronts. The LTW5s I'm looking at don't come in a higher offset and I'd rather not do the hub swap if I can avoid it.
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      03-03-2019, 01:02 PM   #27
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Quote:
Originally Posted by Zombie_Head View Post
Does the 125i/128i even tuned with 270-ish hp need 265s in the rear?

When i did some searches here, results shown for the N52 a square 235/40/17 is "the best", 245/40/17 if one desire more grip and for x-cross and serious track 255s all round on 17s.

245/35s are out of the question for me, no one makes a track day tire in Germany that size except Federals and their 595RS-RR which are not legal (unless you enter competition).
If you've some 128's putting down ~ 270 at the wheels....do you know the recipe for the mods? I think the highest dyno I've seen was barely knocking at 250.....around 248 I believe.

Aside from a supercharger, I would love to be able to see 270 to the wheels as it would make this car ridiculously fun!

Just wondering. I don't track my car, but didn't know if you guys that did were sitting on an "insider" secret.
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      03-03-2019, 01:16 PM   #28
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Originally Posted by Rmtt View Post
If you've some 128's putting down ~ 270 at the wheels....do you know the recipe for the mods? I think the highest dyno I've seen was barely knocking at 250.....around 248 I believe.

Aside from a supercharger, I would love to be able to see 270 to the wheels as it would make this car ridiculously fun!

Just wondering. I don't track my car, but didn't know if you guys that did were sitting on an "insider" secret.
It is 252 at the flywheel, and i changed the tune since i was not happy with it, it was 220 at the wheels give or take. After the new tune i definitely gained a bit more, but never tested.

TBH the market for the E82 is sadly bad here in Germany, trying to sell the car the last 2 months without any serious offer till now.
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      03-03-2019, 05:52 PM   #29
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Quote:
Originally Posted by Zombie_Head View Post
It is 252 at the flywheel, and i changed the tune since i was not happy with it, it was 220 at the wheels give or take. After the new tune i definitely gained a bit more, but never tested.

TBH the market for the E82 is sadly bad here in Germany, trying to sell the car the last 2 months without any serious offer till now.
Power adders here for the 128 are pretty rare aside from the very smart fee who have tested and offered up their guidelines. The Normally Aspirated E82 is getying harder to find here as well....especially if looking for certain configurations.

I took 4+ months looking for an Alpine White, 6 speed, sport seats, bare-bones car with the N52. Still had to settle for a sunroof, but I was okay with it.

I have a 3 stage intake, AA catless headers, and a set of MILVS waiting to go on followed by a custom BPC tune. I'm hoping to see 240-250 at the wheels.

Aside from that....look at ways of weight reduction or the old supercharger route.

As for the 135's, there are quite a bit being dumped around here that are about at the 80K-90k mile mark. And most cars you can tell never had any maintenance done to them. These guys are trying to get rid of them because of a problem, or one that is usually coming.

I would have loved a 135, but since this would be my daily.....I got the 128i.

I already have 1 very fun car, so I needed one that would be practical.....but still be an enjoyment to drive.
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      03-04-2019, 01:15 AM   #30
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Quote:
Originally Posted by Rmtt View Post
Power adders here for the 128 are pretty rare aside from the very smart fee who have tested and offered up their guidelines. The Normally Aspirated E82 is getying harder to find here as well....especially if looking for certain configurations.

I took 4+ months looking for an Alpine White, 6 speed, sport seats, bare-bones car with the N52. Still had to settle for a sunroof, but I was okay with it.

I have a 3 stage intake, AA catless headers, and a set of MILVS waiting to go on followed by a custom BPC tune. I'm hoping to see 240-250 at the wheels.

Aside from that....look at ways of weight reduction or the old supercharger route.

As for the 135's, there are quite a bit being dumped around here that are about at the 80K-90k mile mark. And most cars you can tell never had any maintenance done to them. These guys are trying to get rid of them because of a problem, or one that is usually coming.

I would have loved a 135, but since this would be my daily.....I got the 128i.

I already have 1 very fun car, so I needed one that would be practical.....but still be an enjoyment to drive.
in Europe the N52 125i already comes with the 3 stage intake, it is basically a software detuned 330i essentially.

In Germany, these cars are VERY popular in racing (the E90 series) and engines are left bone stock (272hp) due to rules and regulations. Going as far back as the E36 the engine is always kept bone stock (again due to rules). Which is why the E82 125i never saw any form of racing, due to the 1,500-ish weight to start and 217 hp.

I wish i knew this earlier, i love the E82, but what i want to do with it is not feasible honestly, it must sadly go.
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      03-04-2019, 10:28 AM   #31
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Quote:
Originally Posted by Zombie_Head View Post
in Europe the N52 125i already comes with the 3 stage intake, it is basically a software detuned 330i essentially.

In Germany, these cars are VERY popular in racing (the E90 series) and engines are left bone stock (272hp) due to rules and regulations. Going as far back as the E36 the engine is always kept bone stock (again due to rules). Which is why the E82 125i never saw any form of racing, due to the 1,500-ish weight to start and 217 hp.

I wish i knew this earlier, i love the E82, but what i want to do with it is not feasible honestly, it must sadly go.
That sucks....but you got to do what you got to do. Good luck with your plans!
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      02-17-2020, 08:58 PM   #32
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Originally Posted by Thunderguts View Post
For what it's worth, I just installed 225/45/17s all around on 17x8 wheels with a 45mm offset. For spirited street driving, I think it's fine or even beneficial. For a track car, I think the sidewall is too tall and would roll too easily. Fortunately there are a few 225/40/17 tires available, but they are exclusively track tires (which is what you want).

Someone with more track experience should weigh in on width, but I really don't think anything larger than 235mm is necessary on a car like the 128i. Anything more may actually slow you down. I think you will pick up more time with better balance than you would ever lose from reduced traction/grip.

The 17" size was a big concern for me also since I eventually want to upgrade to the M Performance BBK for the 128i. Since these are the same size as the 135i calipers, I was able to confirm fitment via Tire Rack's wheel guide by using the 135i as my model. Unfortunately they don't sell Apex, but they do carry some superlight TR wheels that fit your needs.

Hello there. I am new to this and my apologies to bother. I have recently purchased a 2008 BMW 135i to use it on open track days. The car came with 18" VMR wheels. It has a staggered setup with front: 215/40 R18 and rear: 245/35 R18. I have been researching lately for the best/most affordable tire options for the tracks. My plan is to move from 18 to 17 inch wheels and get competition tires that are dot approved. Options like Falken Azenis RT615k+ or Nankang Ns-2r.

I have read that you have a square setup using 225/45 R17 all around. Is that on a stock suspension? is there any rubbing?

Thanks a lot for your time!
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      02-17-2020, 11:12 PM   #33
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Quote:
Originally Posted by f.bensalamah View Post
Hello there. I am new to this and my apologies to bother. I have recently purchased a 2008 BMW 135i to use it on open track days. The car came with 18" VMR wheels. It has a staggered setup with front: 215/40 R18 and rear: 245/35 R18. I have been researching lately for the best/most affordable tire options for the tracks. My plan is to move from 18 to 17 inch wheels and get competition tires that are dot approved. Options like Falken Azenis RT615k+ or Nankang Ns-2r.

I have read that you have a square setup using 225/45 R17 all around. Is that on a stock suspension? is there any rubbing?

Thanks a lot for your time!
Still no rubbing and I lowered it another 10 mm with the M Performance suspension and T1 springs on all four corners. 215 is just too small for the front. I don't know why they didn't at least go with a 225 which has no rubbing issues at all. I think I can probably stretch it to a 235 on the same wheels since I now also have -1.1° of camber on the fronts. I'm going to try the Azenis 615s or Direzza ZIII the next time I change tires since they are some of the few available in 235/40/17.
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      02-18-2020, 02:15 AM   #34
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Quote:
Originally Posted by Thunderguts View Post
Still no rubbing and I lowered it another 10 mm with the M Performance suspension and T1 springs on all four corners. 215 is just too small for the front. I don't know why they didn't at least go with a 225 which has no rubbing issues at all. I think I can probably stretch it to a 235 on the same wheels since I now also have -1.1° of camber on the fronts. I'm going to try the Azenis 615s or Direzza ZIII the next time I change tires since they are some of the few available in 235/40/17.

Perfect! I totally agree with what you have said on the 215s. I have read good reviews on the Azenis. I will give them a try the next time I change tires too. Good luck and thanks a lot!
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      02-29-2020, 10:45 AM   #35
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Quote:
Originally Posted by f.bensalamah View Post
get competition tires that are dot approved. Options like Falken Azenis RT615k+ or Nankang Ns-2r.

Those don't exist.


Quote:
As stated above, NHTSA does not do any pre-sale approval or testing of tires.
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      03-02-2021, 08:08 AM   #36
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So, looking at a track only set up on a 128.

I am leaning towards the 18x9 ET42 Apex wheels with 255/35/18 RS4 or R888R square.

Anyone running this setup?

Last edited by MightyMouseTech; 03-02-2021 at 08:14 AM..
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      03-03-2021, 07:08 PM   #37
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Quote:
Originally Posted by MightyMouseTech View Post
So, looking at a track only set up on a 128.

I am leaning towards the 18x9 ET42 Apex wheels with 255/35/18 RS4 or R888R square.

Anyone running this setup?
You are going to need a spacer up front and maybe a little more offset in the rear, unless you are going to touch your fenders.
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      03-03-2021, 07:53 PM   #38
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Quote:
Originally Posted by sibanez View Post
Quote:
Originally Posted by MightyMouseTech View Post
So, looking at a track only set up on a 128.

I am leaning towards the 18x9 ET42 Apex wheels with 255/35/18 RS4 or R888R square.

Anyone running this setup?
You are going to need a spacer up front and maybe a little more offset in the rear, unless you are going to touch your fenders.
This will be a track car only, so fender mods will not be even remotely an issue. Lots of hammers and a cut off wheel in my tool box.
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      03-04-2021, 12:22 PM   #39
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Quote:
Originally Posted by MightyMouseTech View Post
So, looking at a track only set up on a 128.

I am leaning towards the 18x9 ET42 Apex wheels with 255/35/18 RS4 or R888R square.

Anyone running this setup?
We generally recommend at least a 5mm front spacer and rolled rear fenders for this setup. You will need to dial in additional negative camber front and rear as well in most cases but it certainly can work!

-Tom
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      03-04-2021, 01:58 PM   #40
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Originally Posted by Expert@ApexRaceParts View Post
We generally recommend at least a 5mm front spacer and rolled rear fenders for this setup. You will need to dial in additional negative camber front and rear as well in most cases but it certainly can work!

-Tom
Thanks! Will be running about -3.5 front and -2.5 rear, so camber should be fine.
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      03-09-2021, 10:20 AM   #41
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The 18x9 et42 fits the unmodified rear perfect if you do the E9x rear hubs. I actually ran a 3mm spacer just to fill the gap a bit.
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