Nitto 555 RII
Thread Starter
Racer
Joined: Feb 2004
Posts: 455
Likes: 11
From: Roanoke VA
Nitto 555 RII
Just installed a four new Nitto 555 RII tires on my A4 vert, wow.
275/40 17 front and 305/35 18 rear on ZO6 rims.
Drove to a straight stretch of country road where I tested the OEM run flats, brake torque until the tires start to rotate and and would smoke the run flats until I let off - about 200' of snakey black marks and so much smoke I couldn't see out of the mirrors.
The RII's with 33 psi left two foot spin marks, grabbed and bogged the car.
Going to a solo 2 event this Sunday and try them between the cones.
Any sugestions on tire pressures? Im thinking 36 fornt and 33 rear.
275/40 17 front and 305/35 18 rear on ZO6 rims.
Drove to a straight stretch of country road where I tested the OEM run flats, brake torque until the tires start to rotate and and would smoke the run flats until I let off - about 200' of snakey black marks and so much smoke I couldn't see out of the mirrors.
The RII's with 33 psi left two foot spin marks, grabbed and bogged the car.
Going to a solo 2 event this Sunday and try them between the cones.
Any sugestions on tire pressures? Im thinking 36 fornt and 33 rear.
Drifting
Joined: Jun 2001
Posts: 1,511
Likes: 16
From: "Once you have flown, you will walk the earth with your eyes turned skyward; for there you have been
RII's are great tires
I've had my RII's on since the end of May.... absolutely amazing grip! I ran mine at 36 front and 33 rear during a clinic day at a nearby road course... the rears looked great... the fronts seemed to scuff a little past the markers on the tire shoulders so I bumped them up to 38 psi and that seemed to work just fine. My previous setup was BFG G-Force TA KD's on Grand Sport wheels which is a damn good tire/wheel combo for street and track days! But the RII's are in an entirely different league! Love these tires!! 
Drifting
Joined: Jun 2001
Posts: 1,511
Likes: 16
From: "Once you have flown, you will walk the earth with your eyes turned skyward; for there you have been
Originally Posted by turboo2u
Is the RII much different than the regular Nittos 555 thatI'm running now?
The main difference between the regular 555 and the RII is it's an "R compound" racing tire that is "street legal" the the tread depth new is minimal and the wear rating is 100. The RII is much stickier and will wear out 2 or 3 times quicker that your 555's and you probably wouldn't want to do too much wet road driving cause they could get a little bit squirrelly!
Safety Car
Joined: Nov 2003
Posts: 4,969
Likes: 2
From: Lake Worth FL
St. Jude Donor '03-'05-'06 & '12
I run considerably less pressure on the road course; 31f/30r cold. This translated to about 38f/36r hot. Tried a bit higher on the fronts and understeer increased significantly.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
Melting Slicks
Joined: Oct 2001
Posts: 2,786
Likes: 22
From: Cary NC
Originally Posted by joseph796
Where did you purchase the RII's from & what did they cost?
Graham
