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Last Post 27 Aug 2015 03:17 PM by  Joe Weinstein
Street tires better than r-compounds on dirty surfaces?
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Primetime Glick
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Posts:1279


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08 Jun 2015 04:40 PM
    Does anyone think/know if street tires are an advantage over R-compounds on low-grip, dirty asphalt surfaces?

    I'm pondering replacements for my hardened Z214 C71s and my excuse-laden gut tells me they evacuate gravel better, while I always feel like I'm "skating" on my impacted-gravel-covered Z214s.

    Maybe streets are more predictable/consistent on dirty lots but offer a lower overall grip threshold?

    FWIW I'm eyeballing RE71Rs. $150 savings over a set of 4, too.

    -Adam
    rtp.rick
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    Posts:2434


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    09 Jun 2015 06:35 PM
    Yes, on very dirty surfaces.

    Rick Ruth
    Grintch
    Basic Member
    Basic Member
    Posts:259


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    22 Jun 2015 01:25 PM
    I don't think they are better, but they aren't much worse. Which means the extra money and effort to run R Compounds is maybe not worth it on such surfaces.
    Mrsideways
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    Posts:1058


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    10 Jul 2015 01:22 PM
    I bought a set of wheels that came with some 275 C71 Hankooks with a prod date of 2007. Tires look good, felt soft to the finger nail and had plenty of rubber left on them. So I took em to sebring and gave em a try. Last time this car did laps at sebring it had 50 less hp and 225 Hoosier A6's. It was 3.8 seconds slower on the Hankooks. So Moral of the story.... Old R-comps = worse then all seasons. I'm fairly certain Snow Tires would have put a better lap time in.
    Joe Weinstein
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    Posts:44


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    27 Aug 2015 03:17 PM
    As was said, on very dirty/loose surfaces, yes. I've seen a good driver with hoosiers trailer the car
    after one run on a very gravelly (tiny gravel) surface because as soon as the tire got any heat at all
    it got coated with gravel like a cinnamon donut and drove like it was on ball-bearings. Street tires
    were able to soldier on... No fun either way, but less for the hoosiers.
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