[Artemis]

Originally Posted by CSBM5

He showed Cup2 only 46/100ths of a second faster on a 1:16 minute course versus the PS4S. If those are valid results, something like the RE-71R and A052 will easily dust off a Cup2 (well, we already know that of course).

One more: PS4S vs Cup2:

[medphysdave]

I've stuck with the cup 2 because it seems like that is what was used to calibrate the car, and more importantly I wanted to tinker with the sensors. I'd like to see a comparison of a cup2 connect and PS4S on the Case. Not for lap times, but impact on driver feel.

[Davil]

No waivers down here.

I doubt I would get the Cup2Cs if I lived in a very cold place though.

I think they're a no brainer if you are in a warm climate though. Agree with Dave, these were the development tyre for the car so you may as well get the 3 full course meal if you can.

Also Cup 2 and Cup 2C are a different tyre so the videos above are not that useful.

Love them so far. No problems in rain.

Now... the dust from these brake pads! That's another story.

[Hulk Smash]

After reading the following article, I now realize the Cup2 Connects for the CS may behave differently than my previous experiences with the tire on different vehicles (GT350R and Viper). They might have better wet weather grip and durability than other Cup2 tires.

https://motoiq.com/not-all-michelin-...ated-the-same/

[Davil]

Originally Posted by M2CS

After reading the following article, I now realize the Cup2 Connects for the CS may behave differently than my previous experiences with the tire on different vehicles (GT350R and Viper). They might have better wet weather grip and durability than other Cup2 tires.

https://motoiq.com/not-all-michelin-...ated-the-same/

"If your car came with PS4S or Cup 2 tires from the factory, it is probably best to stick with that exact model when it's time to replace the tire. This is because a lot of work goes into developing bespoke tires from a handling and electronic programming standpoint, the subjective feel and performance is optimized for the car, and they often use a more aggressive and performance-oriented compound than standard off-the-shelf tires. Because of this, swapping out a bespoke PS4S or Cup 2 designed for your car to a wider off-the-shelf tire can actually make the car slower and hurt both the subjective and objective aspects of the car. If you decide to go with a different model of non-factory tires, even if it's the same size, it's important to swap all of your tires out and not mix and match one off-the-shelf tire with bespoke tires."

This is what forum member speznazos (or however you spell it sorry) has preached and resulted in quite a number of arguments. Of course he is right.

Thanks for that link. Very good article!

[MomoM3]

My car will be a garage queen / date night car. While I wish I had the need for Cup 2, I went the PSS route just to play it safe. I do wish they came with PS4S instead though. Odd decision on BMWs part.

[medphysdave]

Today: Low 40s, raining, no issues. I do use efficient mode in the wet and cold.

[ptgltw]

I think I want a set of Cup2 Connects for the track. Does anyone know if Tire Rack sells them? I couldn't find them in our size but did find our size that had a BMW Star. Maybe it just didn't say Connect?

[medphysdave]

Originally Posted by ptgltw

I think I want a set of Cup2 Connects for the track. Does anyone know if Tire Rack sells them? I couldn't find them in our size but did find our size that had a BMW Star. Maybe it just didn't say Connect?

Do you plan to get the sensors? I ask because I get the sense that these cup2 connects for bmw have been designed with a bias towards street use.There might be better less expensive options for track only.

Once you put them on, I bet you don't take them off

[CSBM5]

Originally Posted by medphysdave

Do you plan to get the sensors? I ask because I get the sense that these cup2 connects for bmw have been designed with a bias towards street use.There might be better less expensive options for track only.

Once you put them on, I bet you don't take them off

As an aside thought, using the Tirerack test data for the Cup2 240 should really be taken with a grain of salt since we don't have any information on the * version of the tire where BMW might have spec'd a stickier compound, or they may have done one of those infamous "skim the top 32nd super sticky" jobs before regular compound, or a whole host of other tuning levers, etc, as discussed in that Cup2 video.

[f80_MG]

Originally Posted by ptgltw

I think I want a set of Cup2 Connects for the track. Does anyone know if Tire Rack sells them? I couldn't find them in our size but did find our size that had a BMW Star. Maybe it just didn't say Connect?

Tire rack has 2 types of star spec cup2s. If you enter the car as M2 comp, you can see them both. The 240 treadwear is what they say is OE for the CS.
They also incorrectly have the CS as a 2021 model year which is why it's a little harder to find if you try that way

[medphysdave]

Originally Posted by CSBM5

As an aside thought, using the Tirerack test data for the Cup2 240 should really be taken with a grain of salt since we don't have any information on the * version of the tire where BMW might have spec'd a stickier compound, or they may have done one of those infamous "skim the top 32nd super sticky" jobs before regular compound, or a whole host of other tuning levers, etc, as discussed in that Cup2 video.

Maybe so. Tech at break-in service said I had 50% tread left. I hope I have more than that left I've only done 1200 babied miles. I think he said they were at 4mm or 4.5mm.

I just assumed he hadn't seen these tires before and didn't have an appropriate spec.

[ptgltw]

Originally Posted by medphysdave

Do you plan to get the sensors? I ask because I get the sense that these cup2 connects for bmw have been designed with a bias towards street use.There might be better less expensive options for track only.

Once you put them on, I bet you don't take them off

I would likely have a second set of wheels for the track. However I do like the Connect aspect and from what I've heard the M2CS was the first to have this tire. I'll give it a rip.

[ptgltw]

Originally Posted by f80_MG

Tire rack has 2 types of star spec cup2s. If you enter the car as M2 comp, you can see them both. The 240 treadwear is what they say is OE for the CS.
They also incorrectly have the CS as a 2021 model year which is why it's a little harder to find if you try that way

Ah ok, I saw those. and didn't think of entering 2021 for model CS. Shame on them.

Thanks for the info.

Apex wheel and Michelin Cup2 tire combo coming.

[ptgltw]

Originally Posted by M2CS

After reading the following article, I now realize the Cup2 Connects for the CS may behave differently than my previous experiences with the tire on different vehicles (GT350R and Viper). They might have better wet weather grip and durability than other Cup2 tires.

https://motoiq.com/not-all-michelin-...ated-the-same/

This is exactly what it sounds like. Not all Cup2's are created equal it seams. The Cup2's on my GT350R were great but terrible at the same time. So one dimensional.

[Davil]

Originally Posted by medphysdave

Maybe so. Tech at break-in service said I had 50% tread left. I hope I have more than that left I've only done 1200 babied miles. I think he said they were at 4mm or 4.5mm.

I just assumed he hadn't seen these tires before and didn't have an appropriate spec.

Aren't they 5.7mm when new?

[f80_MG]

Originally Posted by ptgltw

Ah ok, I saw those. and didn't think of entering 2021 for model CS. Shame on them.

Thanks for the info.

Apex wheel and Michelin Cup2 tire combo coming.

Did you opt for the heat cycling and/or shaving?
Would be interesting to know usable life with shaving compared to those from the factory.

[AlpsRider]

Originally Posted by Davil

Aren't they 5.7mm when new?

That's what I read, 7.2/32 which converts to about 5.7 mm. I wouldn't be surprised if the mechanics are going by MPSS tread depth which is much deeper.

[mchart]

Originally Posted by medphysdave

Maybe so. Tech at break-in service said I had 50% tread left. I hope I have more than that left I've only done 1200 babied miles. I think he said they were at 4mm or 4.5mm.

I just assumed he hadn't seen these tires before and didn't have an appropriate spec.

Cup 2's and similar category tires only last about 2000-3000 miles tops in my experience. They are not worth running on a car unless you are tracking the vehicle, or just absolutely love blowing through $1200 in tires every 2k miles.

[Davil]

Originally Posted by AlpsRider

That's what I read, 7.2/32 which converts to about 5.7 mm. I wouldn't be surprised if the mechanics are going by MPSS tread depth which is much deeper.

Yes, 7.9mm for PSS.

[ptgltw]

Originally Posted by mchart

Cup 2's and similar category tires only last about 2000-3000 miles tops in my experience. They are not worth running on a car unless you are tracking the vehicle, or just absolutely love blowing through $1200 in tires every 2k miles.

240 tread rating on these. I think they are different

[Jimjamz]

Originally Posted by Artemis

Then skip both the PSS and Cup2 and get a set of PS4S: better/safer than the PSS and Cup2 in the wet + better than the PSS in the dry.

I was going to get the PS4S once my PSS are due for replacement. Why didn't BMW release the F87 CS with those tyres as an option? I had the PS4S on my F80 and they were brilliant.