SNKBYT
Enthusiast
What is the difference in the tires ( Pilot sports?)on the new ACR vs the Pilots on the non ACR? Are the pilot sports like the old
Pilot cups?
Pilot cups?
What is different about the pilot sports on the new ACR
- Thread starter SNKBYT
- Start date
mjorgensen Woodhouse
Enthusiast
The ACR has the sport cups from the factory
Jeff Monheim
Viper Owner
- Joined
- Apr 1, 2008
- Posts
- 379
- Reaction score
- 0
The Pilot Sport and the Pilot Sport Cup tires are two completly different tires. Tread Design and traction/tread wear rating. Pilot Sport have a 220 Traction/tread wear Rating. Sport Cup tires have a 80 Traction/tread wear Rating. (The lower the number the "sticker" the tire)
I have also heard, but I dont know personally that the factory Sport Cups are made specifficly for the Viper and may be different than sport cups to the general public seems a little far fetched to me but you never know!
I have also heard, but I dont know personally that the factory Sport Cups are made specifficly for the Viper and may be different than sport cups to the general public seems a little far fetched to me but you never know!
What is the difference in the tires ( Pilot sports?)on the new ACR vs the Pilots on the non ACR? Are the pilot sports like the old
Pilot cups?
Roughly 7,500 miles in tread wear. The ACR Pilots are really not meant for any street driving other than dry pavement.
I really like the SPORT CUPS. But as you can see, they are a dry weather tire. I have also heard that they aren't that effective when its cold. Has anyone driven them in the cold weather? I installed mine this past Spring.
Just to clarify:
- 08 SRT10 OE tire is PS-2 (Pilot Sport II) New tread style & compounds, assymetrical, non-directional.
- 08 ACR OE tire is Pilot Sport Cup. Sticky, soft, low-mileage DOT street-legal track tire.
-03-06 Viper had Pilot Sport ZP (Run-Flat / RunCrap) Same tread style as the 99-02 Viper Pilot Sport (which was NOT run-flat.)
Grant
Viper Owner
The pilot sport cups **** in the cold. When its below 60F or so both spin and hop increase significantly.
I really don't think they are a very good street tire. They may be better than PS2s on the street (which I've never used), but they don't compare favorably to the Nitto NT-01s I had on my 'vette. Despite its longer wheelbase, heavier front end, slightly more rear camber and smaller 315/30/18 tires, that car could pull the same longitudinal gees (in launching and 1st gear) as my stock ACR. Of course this isn't an apples-to-apples comparison, but I'm really not impressed with PSC performance on the street during winter months.
PSCs are just noticeably harder than other r-compounds (as well as NT-01s), at least when cold. My longacre durometer shows them to be about as hard as the Dunlop Direzzas on my ****** car (though in the PSC's defense, the Direzzas are the quickest real street tire currently made).
I'm run PSCs on the street during the summer on a different car, and I liked them much more.
Kumho should soon be offering the XS in Viper sizes. As one of the latest generation of "extreme performance" street tires, its grip should be comparable to the Direzza, and for a street tire Direzzas are amazing.
I really don't think they are a very good street tire. They may be better than PS2s on the street (which I've never used), but they don't compare favorably to the Nitto NT-01s I had on my 'vette. Despite its longer wheelbase, heavier front end, slightly more rear camber and smaller 315/30/18 tires, that car could pull the same longitudinal gees (in launching and 1st gear) as my stock ACR. Of course this isn't an apples-to-apples comparison, but I'm really not impressed with PSC performance on the street during winter months.
PSCs are just noticeably harder than other r-compounds (as well as NT-01s), at least when cold. My longacre durometer shows them to be about as hard as the Dunlop Direzzas on my ****** car (though in the PSC's defense, the Direzzas are the quickest real street tire currently made).
I'm run PSCs on the street during the summer on a different car, and I liked them much more.
Kumho should soon be offering the XS in Viper sizes. As one of the latest generation of "extreme performance" street tires, its grip should be comparable to the Direzza, and for a street tire Direzzas are amazing.
