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My car on E85 has somewhere in the 510rwhp range but also has 4.10s.
They certainly hook up much better than my very worn old R888s but I still killed them off completely during a 25-60 mph roll yesterday. Lots of factors in that. Heat in the road, asphalt or concrete, etc.
On my old tires my car was pretty much on ice up to about 50 miles per hour in any gear. I swear I don't know how these Z06 guys drive around with 650 rear wheel horsepower on pilot sports.
I know. I'm putting them on a modded C7 Z :/ im really hoping they hook better then my cups.
I think they will be pretty equivalent to the Cups, at less cost and while lasting longer. But more traction? I don't think so.
Good luck!
Not what I'm hoping at all :/ my cups with 2k miles give me no traction under boost until 3rd gear. I have zero confidence in these tires on the street.
New rear rims with drag radials are what you need buddy. Of course then you lose handling.
And where you are at, I bet cooler temps and greasy roads are common. Both of these things are going to cause a lot more traction issues.
Maybe you should have your programmer dial back power in the first 2 gear by a substantial amount? Could be an easy solution that makes the car more fun to drive?
Don't instantly slam your foot to the floor. Roll into it very quickly and you'll be just fine at that power.
I can hook 640rwhp at any rpm in 2nd gear by smoothly and very quickly rolling into the throttle. Give the suspension and tires a chance to hook up. At the dragstrip and runways, I can even get traction in 1st with no burnout. The end of last year was the first time 1st gear was tricky to hook at the 1/2 mile on the runway. They are 3 years old now..
Last edited by Quickshift_C5; 05-15-2017 at 12:58 PM.
And they stick like glue. Only prob for me is the 295/30/19's rub the front when turning. I don't want to get rid of the tires so I'm going to play with the plastic liners.
Are you asking if in the same size, the "R"s are slightly wider? Yes, 5/8" overall wider.
They do seem a bit more rounded at the tread though and I can't help but wonder if they gained any contact patch when going straight. Who knows?
I love these tires. They offer the most performance, affordability, and longevity in their class by a long shot in my sizes. They also look really cool!
Are you asking if in the same size, the "R"s are slightly wider? Yes, 5/8" overall wider.
They do seem a bit more rounded at the tread though and I can't help but wonder if they gained any contact patch when going straight. Who knows?
I love these tires. They offer the most performance, affordability, and longevity in their class by a long shot in my sizes. They also look really cool!
I love the rears. My issue is with the fronts. My 285's rub and pass the fender ever so slightly. I'm wondering if the old 888s in the front might solve my issue.
I love the rears. My issue is with the fronts. My 285's rub and pass the fender ever so slightly. I'm wondering if the old 888s in the front might solve my issue.
My R888's and R888R's rub the wheel wells slightly when close to full lock. I never noticed it on the street/track. Just when parking.
My wheels are 18x10.5 front, 19x11.5 rear. I first tried NT01s at 275/35/18 front, 305/30/19 rear. I thought I could use more traction, and later switched to same brand tire (NT01) at 315/30/18 front and 325/30/19 rear.
Bear in mind, 315s are on relatively small 10.5" wheels. The increase in traction was so immense, that my stock springs couldn't stop my car from leaning too much in corners, despite having GM's C7 T1 sways/shocks. I switched to coilovers, and the combination saved me 4-5 seconds in a 2 minute course.
I did research on the benefit of putting much wider tires without increasing wheel width before I did the switch. A vendor in CA tried this with their Honda and Miata cars. Their verdict was that when they increased tire width within the recommended range, their times dropped similarly, with or without wider wheels, but wider wheels provided better feedback. Sure, feedback is important, but it is OK to compromise when there's just not enough space for a wider wheel without running into excessive rubbing issues.
I was very curious about this myself..
Thanks for explaining that experience, really appreciate it Brother
My car on E85 has somewhere in the 510rwhp range but also has 4.10s.
They certainly hook up much better than my very worn old R888s but I still killed them off completely during a 25-60 mph roll yesterday. Lots of factors in that. Heat in the road, asphalt or concrete, etc.
On my old tires my car was pretty much on ice up to about 50 miles per hour in any gear. I swear I don't know how these Z06 guys drive around with 650 rear wheel horsepower on pilot sports.
I know right!!??
Is that a standard C6 with a 345? What size wheel is that your running?
I’ve got a standard body C6(rear wheel 19 x 11) as well and looking to replace my Mich. Sport Cup’s with some of these R888R’s.
Making 575hp at the tire N/A is just too much for the Sport Cups.
I will say though, they were much better when I origionally put them on the car...probably got hard over the past year.
Don't instantly slam your foot to the floor. Roll into it very quickly and you'll be just fine at that power.
I can hook 640rwhp at any rpm in 2nd gear by smoothly and very quickly rolling into the throttle. Give the suspension and tires a chance to hook up. At the dragstrip and runways, I can even get traction in 1st with no burnout. The end of last year was the first time 1st gear was tricky to hook at the 1/2 mile on the runway. They are 3 years old now..
What's everyone's thoughts on 265/30/19 888R's on a 10" rim? will it look stretched?. stock is a 285/30/19. would you go down to a 265? if not I have to switch to a different tire.
05-14-2017, 10:06 PM
They handle really well.
