Grand Am Contis vs R6
05-26-2011, 04:08 PM
#3
Race Director
the old GAC hoosiers were very similar, just different pattern (or lack there of). I personally wouldn't hesitate mixing them for a track day....but I'll drive anything!
05-26-2011, 06:09 PM
#5
Team Owner
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A Tech guy from Hoosier mentioned to me that the OLDER VRLs were the same rubber compound as the R6s but the VRLs had stiffer sidewalls
the GACs were much different rubber compound and construction.
the GACs were much different rubber compound and construction.
The old VRLs are the same, I think the new ones are a different tire.
05-26-2011, 08:28 PM
#7
Heel & Toe
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Here is something I picked up awhile ago on a forum and saved it about the GAC tires. It's an older post but has some good info.
The tires run in the Grand-Am Cup series have the same construction as the Hoosier R03 from the late 1990's.
The rubber compound is harder than any DOT tire that Hoosier offers.
The speed and wear of the tire is similar to that of a Toyo RA-1. The Cup tires are a little faster when new, and a little slower after a few heat cycles, and have about the same life.
At the beginning of this year, the tires were re-branded as Continentals, but for the first few races, the only differences were that they said "Continental" on the side, and the direct references to Hoosier in the mold on the sidewall were hand-ground off.
Starting with the Lime Rock race in 2010, a new mold for the tires was used, making these a full slick. However, the construction and rubber compound was the same, they are still manufactured at Hoosier's facility in Indiana, and the tires are not significantly faster.
The rain tires are identical to the equivalent Hoosier Wet tires except for the branding...These tires are going to be continued to be used in the CTSCC 2011 season. They have their hands full developing the Rolex tire, which will be all new for next year.
The tires run in the Grand-Am Cup series have the same construction as the Hoosier R03 from the late 1990's.
The rubber compound is harder than any DOT tire that Hoosier offers.
The speed and wear of the tire is similar to that of a Toyo RA-1. The Cup tires are a little faster when new, and a little slower after a few heat cycles, and have about the same life.
At the beginning of this year, the tires were re-branded as Continentals, but for the first few races, the only differences were that they said "Continental" on the side, and the direct references to Hoosier in the mold on the sidewall were hand-ground off.
Starting with the Lime Rock race in 2010, a new mold for the tires was used, making these a full slick. However, the construction and rubber compound was the same, they are still manufactured at Hoosier's facility in Indiana, and the tires are not significantly faster.
The rain tires are identical to the equivalent Hoosier Wet tires except for the branding...These tires are going to be continued to be used in the CTSCC 2011 season. They have their hands full developing the Rolex tire, which will be all new for next year.
05-29-2011, 10:28 PM
#8
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Not sure if you got your answer or not. The GAC tires are NOT the same as R6's. Not even close. The R6 is significantly faster than the tires mandated by GA. Remember, the GAC is a psudo endurance series and needs decent wear.
Our ST MX-5 is much quicker on R6's than on the Hoosier/Conti stuff.
Our ST MX-5 is much quicker on R6's than on the Hoosier/Conti stuff.
