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Thread: Streetable track tire recommendations

  1. #26
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    I, for one, am shocked that the tire tested and developed at that track happens to be the fastest there.

    The Rival is a fine tire, but aside from cars that are on some of the big boy sizes (i.e. Corvettes) I haven't seen anyone running it in competitive 200tw time trials.

  2. #27
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    Not an on-track comparison, but a good summary of a bunch of performance track tires.

    https://grassrootsmotorsports.com/ar...-buyers-guide/

  3. #28
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    Quote Originally Posted by AJLM34A View Post
    video
    While I appreciate these videos, I really just want the results.

    results.jpg

    A buddy just pointed out something interesting.

    So one thing I heard about this test is that they weren't doing hero laps
    Bc I guarantee the direzza ziii I'd nowhere close to a052
    This was also done on Michelin test track
    Which surprise surprise owns bfg
    Last edited by golgo13; 07-06-2021 at 02:46 PM.

  4. #29
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    Quote Originally Posted by golgo13 View Post
    While I appreciate these videos, I really just want the results.

    results.jpg

    A buddy just pointed out something interesting.
    Part of it is the tire size vs wheel size, the Yoko hates to be pinched and needs a wide wheel to support the relatively soft sidewall. They tested a 225 on a 7.5" wheel which isn't enough, I found on a 9" wheel that 245 was as wide as you could go and have them actually perform properly. 255's on the same wheel were mushy, vague, and the breakaway characteristics were more peaky. Tire pressures also matter, and I don't know if/how they determined optimal pressures for each tire.

    That said, the Yoko does not like heat and will give up after a couple of laps, especially if it's hot. If you're in a 200tw time trial class and you are just going for one hero lap they're great, if you're trying to run 20 minute sessions leaning on the tires the entire time then other tires would be better suited.
    97 M3 - SCCA TT Prepped
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  5. #30
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    I just ordered a spare set of 17x9.5" wheels and a set of RT660s in 255/40/17, we'll see how it goes.

    This is coming from NT01s which have been my go-to tire for several years now.

  6. #31
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    I'm not sure what kind of camber the LTW is running, but I guarantee it isn't nearly enough to optimize the Yoko.

  7. #32
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    Quote Originally Posted by golgo13 View Post
    I just ordered a spare set of 17x9.5" wheels and a set of RT660s in 255/40/17, we'll see how it goes.

    This is coming from NT01s which have been my go-to tire for several years now.
    Super 200's drive so differently from NT01, you might end up going back purely for the consistency. Just like all the others, RT660's fade if you push them for more than a few laps. My Civic didn't last more than 1.5 laps of NCM without the fronts fading.

    I did notice that A052's with enough camber are happier lap-after-lap than RE71R, you just need touring-car amounts of camber for the tire that is effectively a touring-car slick with grooves. I think most people tracking on A052's still don't have enough camber, judging on the complaints of outer shoulder overheating.

  8. #33
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    Quote Originally Posted by circuit.heart View Post
    Super 200's drive so differently from NT01, you might end up going back purely for the consistency. Just like all the others, RT660's fade if you push them for more than a few laps. My Civic didn't last more than 1.5 laps of NCM without the fronts fading.

    I did notice that A052's with enough camber are happier lap-after-lap than RE71R, you just need touring-car amounts of camber for the tire that is effectively a touring-car slick with grooves. I think most people tracking on A052's still don't have enough camber, judging on the complaints of outer shoulder overheating.
    Oh, I don't expect NT01 levels of consistency. I just want a faster tire.

  9. #34
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    I ran ra1's for like 1o yrs.......

    drove car to and fro events..... all the way to the cords.

    e30/s50

    - - - Updated - - -

    Quote Originally Posted by golgo13 View Post
    I just ordered a spare set of 17x9.5" wheels and a set of RT660s in 255/40/17, we'll see how it goes.

    This is coming from NT01s which have been my go-to tire for several years now.


    9.5 on 255 fit????.....what wheels and offset?????....fender mods?

  10. #35
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    Quote Originally Posted by jrkoupe View Post
    9.5 on 255 fit????.....what wheels and offset?????....fender mods?
    My wheel specs:

    255/40/17 NT01s
    17x9.5” +35 APEX ARC8
    15mm spacer up front
    Fenders are rolled and pulled
    Camber is -3*F/-2*R

  11. #36
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    The RT660 is better than the RT615k+, is as fast as the A052 from Yokohama but doesn't overheat as quickly and seems to have better wear characteristics. shareit app vidmate apk

  12. #37
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    Quote Originally Posted by jesarshare View Post
    The RT660 is better than the RT615k+, is as fast as the A052 from Yokohama but doesn't overheat as quickly and seems to have better wear characteristics. shareit app vidmate apk
    You really can't use the word "better" IMO without prefacing what metrics you are measuring them against.

    Are the RT660s "better" from a longevity and consistency standpoint?

  13. #38
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    Has anyone bought new track tires in the past 6 months?

    I just got set of 17/8.5" wheels and want to drop from 300TW to 200TW(no lower than 200TW) dry track only tire and was waiting on the new for 2022 Potenza RE-71RS in 245/40/17 to be released but they have been pushed back another month + and cannot wait for them anymore. I have wet/street tires already, just a dry weather tire for an E36 M3 on Bilstein PS9s with Hotchkis anti-roll bars.
    Last edited by AJLM34A; 06-20-2022 at 04:34 PM.
    [IMG][/IMG]

  14. #39
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    Quote Originally Posted by AJLM34A View Post
    Has anyone bought new track tires in the past 6 months?

    I just got set of 17/8.5" wheels and want to drop from 300TW to 200TW(no lower than 200TW) dry track only tire and was waiting on the new for 2022 Potenza RE-71RS in 245/40/17 to be released but they have been pushed back another month + and cannot wait for them anymore. I have wet/street tires already, just a dry weather tire for an E36 M3 on Bilstein PS9s with Hotchkis anti-roll bars.
    Most comparable to the RE71R:
    https://www.tirerack.com/tires/tires...m=44WR7RT660XL

    2 other options:
    https://www.tirerack.com/tires/tires...tnum=44WR7Z232

    https://www.tirerack.com/tires/tires...num=44WR7ECFXL

  15. #40
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    I found for track capable street tyres the Yokohama AD08R tyres to be great, and probably the quietest tyre of this type and it will do wet weather far better than some.
    They are more a track capable road tyre rather than a road capable track tyre.

    Only comprise for road use is they need some heat in them to grip. A little slippery on a cold morning

  16. #41
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    So, GRM did a tire sheet recently and it had some really interesting info and a few surprises for me.

    Namely, they gave the Kumho V730 really high marks. I'm going to try this tire next.

    Take a look


    Last edited by golgo13; 07-13-2022 at 12:42 PM.

  17. #42
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    V730s are intriguing for the price, but their wet rating of B- seems a little generous to me. Of course wet tracks may be a lot less common in your neck of the woods and not as concerning.

  18. #43
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    Pheuy. V730 have better wear performance than an NT01? All while having quicker warmup times? Would love to see someone getting the same heat cycles out of their v730s I am on NT01s.

  19. #44
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    Quote Originally Posted by SLA View Post
    V730s are intriguing for the price, but their wet rating of B- seems a little generous to me. Of course wet tracks may be a lot less common in your neck of the woods and not as concerning.
    For sure, not all uses are created equal. YMMV

    Quote Originally Posted by olemiss540 View Post
    Pheuy. V730 have better wear performance than an NT01? All while having quicker warmup times? Would love to see someone getting the same heat cycles out of their v730s I am on NT01s.
    Keep in mind, the NT01 compound design is now a decade old.

  20. #45
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    And RA-1 that I run on the street may be pushing close to 20 years.

  21. #46
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    I have a bunch of NT01 data so once I start running these V730s, I'll be able to compare heat cycles and event days.

    I have yet to see anything come close to 9 track days and my NT01s weren't even cording yet when they were done.

  22. #47
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    Track day tyres are awesome for street driving. They offer a lot more grip – even more than high-performance tyres. However, some track day tyres may suffer once the weather turns wet. Because most of them have very little tread, they cannot cut through standing water as well as regular tyres get-vidmate.com instasave.onl
    Last edited by mahtovid; 12-20-2022 at 03:38 AM.

  23. #48
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    Quote Originally Posted by golgo13 View Post
    I have a bunch of NT01 data so once I start running these V730s, I'll be able to compare heat cycles and event days.

    I have yet to see anything come close to 9 track days and my NT01s weren't even cording yet when they were done.
    Any update?

  24. #49
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    Quote Originally Posted by olemiss540 View Post
    Any update?
    This is will be just me using the tires over the 2023 season and seeing how they do. I only drive about one event a month Sept - April/May so it's going to be a while. Not to mention, I'm going to use the Falken RT660s until they fall off or cord before I switch to my V730s.


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