I did a search and did not find any negative answers. Most people I have asked have steered me away from the Cup sport tires. I am thinking about a second set of Kinesis F110 rims painted in satin black and wanted to get a tire that is different that what I already own. I have Potenza's and PS2s already.


I was planning on putting the tire on a kinesis F110 painted in satin black and use them for the track or light street use in the summer. I would like to hear any negatives about going with this tire.

 

Go for it!

 

There are a few downsides to cups.

1) They hydroplane very easily (although I think less than the Toyo R888) so you will need to go slower in the rain (50mph where you would easily be doing 75mph before).

2) They are sensitive to temperature. You are in Texas so I dont know how cold it gets but when its 30-45 the tires feel like rocks even with low PSI. These really need a warm ambient temperature otherwise they are no better (if not worse) than other performance tires.

3) They have a lot less tread than regular tires. You want to make sure that you have a good alignment, even if you arent tracking the car, because you will eat through the insides very fast if you have too much negative camber and you'll be replacing them very fast.

4) They are very sensitive to PSI changes on the track. You will want them around 32F and 34R when hot (check your pressure after each session and bleed them). Even a 1 PSI variation can make a huge difference as anything above 35R and the car will become very sloppy. If you notice that you are losing traction near the end of your session, especially under breaking check your in-car PSI monitor, its off by a few PSI but you can determine how much the PSI has risen since you drove out and you'll probably see that its way too high. On my car the PSI reads about 29/31 and thats about 32/34 in the tires.

Positives:
They are fantastic tires with a lot of feedback, as long as you watch out for the points above you will have no problems with them. Personally I think they are overkill unless you track the car regularly, otherwise you may not notice much of a difference between them and the PS2s and you will need to be more mindful of the weather.

 

****, the tires seems overly sensitive. It looks like I would be better off with PS2s. Any other tire suggestion.

 

The Pirelli Corsa is another alternative to the Michelin Cups. It's better in the rain or damp conditions. I have to agree to raiyu though. These are at best a comprmise, not as good as slicks and not as good for everyday use as the PS2.

 

Fantastic & helpful report. Thanks.

 

Nice wheel, how about the Pirelli Corsa?

 

They'd make a great combo just be sure to stay out of the rain and snow.

 

I have had no trouble with the N 0 Porsche spec sport cup tires on the street.

 

I have tried the cups on the street and they are wondeful under dry conditions, really responsive and even comfortable... I have no clue under rainy conditions...

 

Frissen
When is Luis going to invite up to Houson? I think you will like the MSR track.

 

In rainy conditions it's like driving on ice...

 

Everything said has been very well put. I'd start with PS2 and go up to cups from there. This time of year isn't the time to be "learning" Cups.

Please give me a call if I can help!

 

John,

I run Cups on the street without any adverse effects. They are not the real cups, more like PS3's. I think you would be very happy with them, and they weight 2lbs less per corner than the PS2's

 

Agree with Eclou, these are not old school cups, they are harder and have an extra rain groove cut into them. I have driven mine in the rain numerous times, something I could never do with my old (real) cups.