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      06-01-2021, 03:04 AM   #45
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OK … having just checked Michelin's Aussie site there are 255/35 R19 and 275/35 R19 both PS4S* available … I have the "normal" PS4S but the * rated sizes just appeared on their list. I then read the press on them and there is some additional M2 and M3/M4 development that has occurred for the PS4S. Has Michelin bothered homologating a special PS4S for the older F80 AND the G80?
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      06-01-2021, 06:00 AM   #46
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Quote:
Originally Posted by n_ac View Post
You should be able to use m340i tires for the front and G80 for the rear. That's likely what I'll go with.
I would definitely not recommend doing that. The tread compound is likely different for the two tires and putting a rear tire up front with a front tire in the rear on the wrong wheel widths is not optimal at all. You're likely better off using the generic PS4S if you want to retain the original F8X tire sizes.
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      06-01-2021, 06:03 AM   #47
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Quote:
Originally Posted by mfurse View Post
OK … having just checked Michelin's Aussie site there are 255/35 R19 and 275/35 R19 both PS4S* available … I have the "normal" PS4S but the * rated sizes just appeared on their list. I then read the press on them and there is some additional M2 and M3/M4 development that has occurred for the PS4S. Has Michelin bothered homologating a special PS4S for the older F80 AND the G80?
Read post above, far from ideal to mix and match different spec tires unless proper research has been done for optimal matching.

Chassis specific tire development is a joint effort between the vehicle and tire manufacturer and is quite exhaustive (expensive and time consuming) and is done concurently with the development of the vehicle itself. BMW and Michelin will not invest in developing a new spec tire for older chassis.
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      06-01-2021, 08:05 AM   #48
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Quote:
Originally Posted by mfurse View Post
OK … having just checked Michelin's Aussie site there are 255/35 R19 and 275/35 R19 both PS4S* available … I have the "normal" PS4S but the * rated sizes just appeared on their list. I then read the press on them and there is some additional M2 and M3/M4 development that has occurred for the PS4S. Has Michelin bothered homologating a special PS4S for the older F80 AND the G80?
Where it says MO1 that means the tire was developed with Mercedes Benz amg. This is their version of bmw star spec.
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      06-01-2021, 08:32 AM   #49
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Quote:
Originally Posted by ZM2 View Post
I don't know that I would recommend that, except for the specific car the star was designed for.

For instance, I believe the 4S* 275 that you highlighted is a front tire option for the G80/82. I probably wouldn't run that on the back of my M2. There's also a 4S* 255, but that's the rear tire spec on the new 3-series--I probably wouldn't want to run that on the front of my M2. Altho, it would be interesting to get someone's detailed feedback on those 4S* sizes for the F8X cars.

When I went from PSS* to PS4S, the PS4S is definitely better in the wet, colder temps, quieter, more comfortable, lasts longer, is just as quick and doesn't grease out as fast on track, but the steering feel is more numb. If it’s down to 245/265 PSS* vs 255/275 PS4S generic on my M2, I’m probably sticking with my switch to the 4S bc it’s only my daily and wet track tire, but it’d be nice to get some of the 4S* specific steering response in the vid.

Guess will have to wait for the 5S generic or the 4S* that they spec for the new M2, but who knows if that 4S* will be appropriate for the F87.
Your problem will likely be the staggered diameter front to back. 19 front 20 rear.

This was a very interesting video. Bottom line is there is no free lunch - what they gained in the dry they lost in the wet. Choices choices. When are you most likely to crash?

Since my generic 4S are the street and rain track setup, I actually prefer the better capability in the wet and could not care less for the maximum dry track traction. And with -3 negative camber at the front...
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      06-01-2021, 09:07 AM   #50
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Quote:
Originally Posted by new2the3 View Post
Quote:
Originally Posted by mfurse View Post
OK … having just checked Michelin's Aussie site there are 255/35 R19 and 275/35 R19 both PS4S* available … I have the "normal" PS4S but the * rated sizes just appeared on their list. I then read the press on them and there is some additional M2 and M3/M4 development that has occurred for the PS4S. Has Michelin bothered homologating a special PS4S for the older F80 AND the G80?
Where it says MO1 that means the tire was developed with Mercedes Benz amg. This is their version of bmw star spec.
By my experience the Mercedes 295 20" ps4s spec runs markedly narrower than the generic version ceteris paribus.
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      06-01-2021, 10:24 AM   #51
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Quote:
Originally Posted by CanAutM3 View Post
mkoesel, this video was originally shared in the appropriate technical section a little while back:

https://g80.bimmerpost.com/forums/sh....php?t=1828227
Thanks for the heads-up. This is one of those instances where a good case can be made for either forum. Though a merge would probably make sense.
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      06-01-2021, 10:32 AM   #52
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Originally Posted by mkoesel View Post
Thanks for the heads-up. This is one of those instances where a good case can be made for either forum. Though a merge would probably make sense.
Just wanted to ensure that front page credit was given to the right poster
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      06-01-2021, 10:55 AM   #53
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This is pretty eye opening.
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      06-01-2021, 11:15 AM   #54
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This is amazing! BMW should incorporate these tires for all their M lineup. If I weren't switching to the G80 I would put these on my F82. The top 2 mods for my F82 that offered the most performance price ratio was finally switching to the PS4S from the OEM Pilot Sports and BM3. Just hoping that I'll eventually win the tire lottery and not get stuck with the Pirelli's.
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      06-01-2021, 02:59 PM   #55
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Quote:
Originally Posted by CanAutM3 View Post
Quote:
Originally Posted by n_ac View Post
You should be able to use m340i tires for the front and G80 for the rear. That's likely what I'll go with.
I would definitely not recommend doing that. The tread compound is likely different for the two tires and putting a rear tire up front with a front tire in the rear on the wrong wheel widths is not optimal at all. You're likely better off using the generic PS4S if you want to retain the original F8X tire sizes.
I would love for a comparison of the (mix and match) setup vs non * tires vs g80* tires on CS wheels.

I was naively under the impression that they just use the same design across cars with similar weight and dynamics as opposed to individually developed tires per model vs brand.

Comments from some others around non* ps4s on f80 losing steering feel have me wondering if I should just go with *pss

Thanks!
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      06-01-2021, 03:02 PM   #56
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Quote:
Originally Posted by Solarium View Post
This is amazing! BMW should incorporate these tires for all their M lineup. If I weren't switching to the G80 I would put these on my F82. The top 2 mods for my F82 that offered the most performance price ratio was finally switching to the PS4S from the OEM Pilot Sports and BM3. Just hoping that I'll eventually win the tire lottery and not get stuck with the Pirelli's.
I'll be switching out from the * continentals so good to see you noticed a good improvement with the OTS PS4S
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      06-01-2021, 03:40 PM   #57
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Quote:
Originally Posted by n_ac View Post
I would love for a comparison of the (mix and match) setup vs non * tires vs g80* tires on CS wheels.

I was naively under the impression that they just use the same design across cars with similar weight and dynamics as opposed to individually developed tires per model vs brand.

Comments from some others around non* ps4s on f80 losing steering feel have me wondering if I should just go with *pss

Thanks!
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      06-01-2021, 05:35 PM   #58
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Quote:
Originally Posted by ZM2 View Post
Quote:
Originally Posted by n_ac View Post
I would love for a comparison of the (mix and match) setup vs non * tires vs g80* tires on CS wheels.

I was naively under the impression that they just use the same design across cars with similar weight and dynamics as opposed to individually developed tires per model vs brand.

Comments from some others around non* ps4s on f80 losing steering feel have me wondering if I should just go with *pss

Thanks!
Had missed this one. Thanks for sharing.
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      06-03-2021, 08:17 PM   #59
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Great stuff!! Did not know there was a difference
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      06-04-2021, 12:38 PM   #60
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This is on of my favorite reviews of anything lately. I have heard for years there was a difference with the Star tires but its nice to see its just not marketing BS. 2 seconds is huge.
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      06-10-2021, 12:05 PM   #61
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Is the pattern actually different?
https://www.tyrereviews.com/Article/...t-OE-Tyres.htm

Name:  oe-vs-rt.jpg
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      06-10-2021, 12:47 PM   #62
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Quote:
Originally Posted by iatacs19 View Post
Yes! Look at it. It's subtle, but it's different.
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      06-21-2021, 06:03 PM   #63
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Quote:
Originally Posted by Ibiza View Post
The BMW M engineers rave about the Pirelli's, that's why I'm not upset when my X5M comp came with P zeros from the factory. My future G83, what ever the factory installs.
Do you have any videos or otherwise that talk about the Pirellis vs the Michelines for the G8*?

I'd like to not care about the tire I get, however the wet performance is very important where I am. My understanding is that the Pirellis suffer in the wet.
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      06-22-2021, 06:23 AM   #64
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For those interested to see how they compare to the the G8X spec PSC2:

https://g80.bimmerpost.com/forums/sh....php?t=1835862
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      10-23-2023, 06:55 PM   #65
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Exact Manufacture part number of "BMW Star" tire

Can someone please give me exact part numbers for the tires from the video?!?
Tire Size: front 225/45R18/XL rear 255/40R18/XL

I'm in Southern California and am trying to find the same "BMW Star" tires referenced in the video for my 2022 M340xi. I want to get tires from Costco if possible, where I did find an "OEM" for the PS4 not the PS4S (see below) but I can't tell if they are the ones from the video. What tire do I want for max performance (no bad weather) PSS, PS4, AS4, PS4S . . . ? What is the best option that Costco sells? Or should I get tires somewhere else? If possible, please help give me a link to the best tire that is locally available.

Michelin - Pilot Sport 4 OEM
Costco Item #: 1382342 1632355
Mfg Item #: 01333 10526

Michelin - Pilot Sport 4 S (doesn't say OEM)
Costco Item #: 1236608 1236680
Mfg Item #: 31753 98512

Last edited by new_g20; 10-23-2023 at 07:19 PM..
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      10-24-2023, 06:40 AM   #66
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Quote:
Originally Posted by new_g20 View Post
Can someone please give me exact part numbers for the tires from the video?!?
Tire Size: front 225/45R18/XL rear 255/40R18/XL
You will have to buy new wheels if you want PS4S. Michelin does not make ANY star-spec PS4S in 18" sizes. Here are all of the available sizes, according to Tire Rack:

225/40/19
245/35/19
245/45/19
255/35/19
275/35/19
275/35/20
285/30/20
285/35/20
255/40/21
295/30/21
315/20/22

You can get Pilot Sport 4 ZP (run-flat) or Pilot Super Sport star specs in your sizes. Star spec PSS is a much better tire IMO than stock PS4S.
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