[///M TOWN]

Originally Posted by ///MPhatic

For 17 miles, then they are treacherous in the rain, and hard as a rock.

It's a numbers tire, and the numbers are great, they just don't last long.

PS4S FTW

Well DanG is recommending going with the M4's size of 255 front 275 rear that he just installed on his M2

I think those are available but I'm concerned about changing sizes

Why do you feel they are no good?

[///MPhatic]

Originally Posted by ///M TOWN

Well DanG is recommending going with the M4's size of 255 front 275 rear that he just installed on his M2

I think those are available but I'm concerned about changing sizes

Dan is smart, it's a very good play, and common. I would be unconcerned.

[///M TOWN]

Originally Posted by ///MPhatic

Dan is smart, it's a very good play, and common. I would be unconcerned.

I was told by a tire expert that tests for all these car companies, that the stability system is programmed specifically to that tire size and that changing them to another size is counter productive to the stability of the car

The very reason BMW kept the same size on the M2CS

That is my reservation and my only concern

[///MPhatic]

Originally Posted by ///M TOWN

I was told by a tire expert that tests for all these car companies, that the stability system is programmed specifically to that tire size and that changing them to another size is counter productive to the stability of the car

The very reason BMW kept the same size on the M2CS

That is my reservation and my only concern

I believe you have been misled.

The tire size on the CS is the same because the wheel size is the same, and all things considered it's the best performing size.

However, that speaks only to the limit. If you're not tracking the car you'll notice little difference at all.

My personal preference is the Firehawk Indy in 265/30 & 285/30, but that's another discussion.

The 255/35 & 275/35 size is pervasive around here, and I've never read anything that said they changed the character of the car in any significant way.

[DanG]

Here is a big discussion on tire size. https://f87.bimmerpost.com/forums/sh....php?t=1468422

Lots of people are running 255/35/19 and 275/35/19s with zero problems.

[ZL9M2]

I have the Cup 2's on my CS and just put a set on my '17 M2 as well. They are awesome tires. Totally transformed the '17. Especially if you can get them at 0 addl cost. I just went one size wider front and rear with no spacers on the '17.

[///M TOWN]

Originally Posted by ZL9M2

I have the Cup 2's on my CS and just put a set on my '17 M2 as well. They are awesome tires. Totally transformed the '17. Especially if you can get them at 0 addl cost. I just went one size wider front and rear with no spacers on the '17.

So you went w 255 front 275 rear like Dan?

How do you feel they transferred your OGM2?

[ZL9M2]

Yes, if I remember 255 - 275 is one size wider front and rear. The tires are much more responsive. It feels like a different car. Granted mine is the ZL9 with the M Perf coilovers, but it still made a noticeable difference. I can't wait to try them on the track.

[///M TOWN]

Originally Posted by ZL9M2

Yes, if I remember 255 - 275 is one size wider front and rear. The tires are much more responsive. It feels like a different car. Granted mine is the ZL9 with the M Perf coilovers, but it still made a noticeable difference. I can't wait to try them on the track.

Forgive my ignorance

What is ZL9 M2?

Performance w/ Coils?

[DanG]

Tire Rack tire comparison. Need to watch the Cup 2s in the rain. As a daily driver the PS4s are a better tire. Cup 2s are great dry weather track tires.

https://www.tirerack.com/tires/tests...y.jsp?ttid=262

[///M TOWN]

Originally Posted by DanG

Tire Rack tire comparison. Need to watch the Cup 2s in the rain. As a daily driver the PS4s are a better tire. Cup 2s are great dry weather track tires.

https://www.tirerack.com/tires/tests...y.jsp?ttid=262

I don't daily it but I will watch it tonight

Thanks Dan

[medphysdave]

The cup2 (240) is a great tire. Those that say they are "treacherous" in the rain have likely never driven on them. I DD my car. Had them on all winter. Driven hours in the rain. In the rain in mid 30 degree F weather. They are fine. Yes, I'm more cautious when it's wet, but Im more cautious on any tire in the rain. They are every bit as good as my p-zeros on another car and arguably better in the cold. Would I drive them in wet below freezing? No. Are they optimal for cold weather? No. You need to make sure they are warmed up (track connect sensors work well). They are pricey and may only get 8k miles out of them. I'm at 3k and they still look really good. I plan to replace them with another set of cup2s when the time comes.

[medphysdave]

Originally Posted by ///M TOWN

Only 8K with track duty or driven on the streets?

Thats pretty low but I guess it makes sense to some degree

Only street. The tread depth is really shallow to begin with. They don't appear to have worn much, but I haven't stuck a depth gauge on them. I wanted to share that little gem before someone dropped 2k on tires and regretted the decision. I was hoping I'd get 10-12k out of them, but I think that is really optimistic. The grip on these is incredible, but it certainly comes with a cost.

[///M TOWN]

Originally Posted by medphysdave

Only street. The tread depth is really shallow to begin with. They don't appear to have worn much, but I haven't stuck a depth gauge on them. I wanted to share that little gem before someone dropped 2k on tires and regretted the decision. I was hoping I'd get 10-12k out of them, but I think that is really optimistic. The grip on these is incredible, but it certainly comes with a cost.

Well they are probably closer to 1500 usd but I completely get your point

[ZL9M2]

ZL9 package is the Performance Package from 2017. 150 cars were produced with that option.

For what it's worth we just drove the CS and base M2 to S Carolina and back for the MX1 fest - both on Cup 2's - through rain and all types of weather. They were fine for almost 2k round trip miles. Yes, they are soft and will pick up a bit more debris, but to me that's a reasonable trade off. I don't expect to get more than probably 8,000 miles out of a set but that's about 2-3 years for me as neither car is a daily. If you don't daily the car and expect to do a few track days I can't imagine a better tire choice.

[///M TOWN]

Originally Posted by ZL9M2

ZL9 package is the Performance Package from 2017. 150 cars were produced with that option.

For what it's worth we just drove the CS and base M2 to S Carolina and back for the MX1 fest - both on Cup 2's - through rain and all types of weather. They were fine for almost 2k round trip miles. Yes, they are soft and will pick up a bit more debris, but to me that's a reasonable trade off. I don't expect to get more than probably 8,000 miles out of a set but that's about 2-3 years for me as neither car is a daily. If you don't daily the car and expect to do a few track days I can't imagine a better tire choice.

I remember that limited car

Has a 168mph top speed IIRC

[Davil]

I have the Cup 2 Connect. When they are worn out I will replace them with the Cup 2 Connect. This is an important thing to keep in mind. Once you are used to this tyre it is unlikely you will want to go back to anything else. Just make sure it is the exact BMW star spec connect version, not the standard Cup 2. I have not noticed any issues in the rain. I guess you may do as they approach end of life but that's the same with any tyre.

[///M TOWN]

Originally Posted by Davil

I have the Cup 2 Connect. When they are worn out I will replace them with the Cup 2 Connect. This is an important thing to keep in mind. Once you are used to this tyre it is unlikely you will want to go back to anything else. Just make sure it is the exact BMW star spec connect version, not the standard Cup 2. I have not noticed any issues in the rain. I guess you may do as they approach end of life but that's the same with any tyre.

What size are you running ?

[Davil]

Originally Posted by ///M TOWN

What size are you running ?

The ones delivered on the car. 245 / 265.

[///M TOWN]

Originally Posted by Davil

The ones delivered on the car. 245 / 265.

Perfect that's the exact size I want to stay with

Any more characteristics about these tyers that you can potentially pass on to me I know it's not easy to put into words

[Davil]

Originally Posted by ///M TOWN

Perfect that's the exact size I want to stay with

Any more characteristics about these tyers that you can potentially pass on to me I know it's not easy to put into words

They aren't a track tyre, they are what you call an extreme performance road tyre. I think Michelin should have given them a new name really as everyone mixes them up with the Cup 2s. No wonder when they have for all intents and purposes the same name.

It's hard for me to contrast them directly to PSS (or as I call them, Pilot Slippery Sports) as I have them on a different car with lots of other changes. However I suspect they would make a very nice improvement to steering feel on the M2 and M2C. Grip is off the charts. They warm up quickly. They do pick up road crap a bit more easily but I don't live somewhere with all the winter gravel issues, so this is minor for me. And it's nowhere near the level of pick up as full on track tyres. I live in a warmer climate too, so I can't vouch for cold weather performance but Dave above says they are ok. I really love these tyres.

Finally, a good video to watch. Includes the PS4S as well and of course mentioning the steering feel problem with the PS4S that many members have mentioned. Note: The Cup 2s in this are not the Cup2C.

The reason I included is those Goodyear Supercar 3 look to be placed in exactly the same space the Cup 2 Connect. They sound really great and fit my spec of nice road feel. So they may also be worth checking out.

This guy's reviews are always really good.

[///MPhatic]

Originally Posted by ZL9M2

Yes, if I remember 255 - 275 is one size wider front and rear. The tires are much more responsive. It feels like a different car. Granted mine is the ZL9 with the M Perf coilovers, but it still made a noticeable difference. I can't wait to try them on the track.

Careful with that. The 255/35 and 275/35 combo is definitely less responsive than the PSS in stock sizes, new for new, and the 255/275 combo isn't as balanced, as the rear tire width's relationship to the front is off from stock as well.

Compare apples to apples, new to new, exact size to exact size.

Originally Posted by medphysdave

The cup2 (240) is a great tire. Those that say they are "treacherous" in the rain have likely never driven on them.

I've driven on them in the rain in a car without TC and DSC and they are terrible.

Of course, in the nanny-all-the-things M2, they're much better, but they still lose their ultimate grip quicker, and get loud sooner than a true street tire does. The PSC2 is just not a good street tire, and to say it is, is to mislead someone.