when roadracing, 15" or 16" wheels?

Discussion in 'OT Driven' started by ace3, Feb 12, 2002.

  1. ace3

    ace3 mouthify my wang.

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    stock size is 16", but 15's should fit over the front brakes...

    any reason i should size down to 15" for road racing?

    :dunno:
     
  2. MADIZM

    MADIZM Your mother sux cocks in hell

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    :dunno:

    <-----does not race cause car is slow :(
     
  3. ProjectGSX

    ProjectGSX Guest

    Less rotational mass. I wouldn't do it unless you are going wider, though. The extra sidewall will hurt cornering.
     
  4. Jaron95

    Jaron95 "Gattai" dattou?!

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  5. Short Bus

    Short Bus Beep beep!

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    It depends on what you're doing with the car.
     
  6. Nacho

    Nacho Fancy words here.

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    for road racing, stick 16". you need small(er) sidewalls.

    I'm upping mine to light weight (Kosei K1) 16" (from 15") for this season' auto-X and road races. :bigthumb:
     
  7. ace3

    ace3 mouthify my wang.

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    i wasn't planning on going any wider... most likely i'll stick with 205/16's.

    Kumho makes a 205/45-16 (as well as a 225/50) in the tire that I want. :big grin:

    now to find wheels... 5x100, to be specific... :mad:
     
  8. Blain-child

    Blain-child Guest

    Ace3- what do you drive?
     
  9. twin_turborx7

    twin_turborx7 Sponsor: DeeperImage.com

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    Bigger tire is more important that the bigger wheel in most cases. However this is track specific.
     
  10. xivera

    xivera Active Member

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    16's

    Why size down for road racing!? :confused:
     
  11. neo_omega

    neo_omega New Member

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    you should listen to Tim.
     
  12. Jaron95

    Jaron95 "Gattai" dattou?!

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    Re: 16's

    Better acceleration due to less rotational mass...? Smaller diameter wheel = easier for the engine to turn.
     
  13. Balzz

    Balzz Guest

    Suspension also reacts much better with lower unsprung weight doesn't it?
     
  14. xivera

    xivera Active Member

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    Yes, I understand that but, he said his car has 16's stock? :confused:
     
  15. 98SHDiamond

    98SHDiamond Active Member

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    Need more info..What type of car is this running? If it's a civic/integra, I would stick with 15". If it's a Prelude, I would stick with 16".

    What are you running?

    Is this on the road course / track course or drag race? How long is the race? In any case, better to load up on V700 unless it's wet surface than you are SOL!:beer:
     
  16. Nacho

    Nacho Fancy words here.

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    He's got a new Smellica.
     
  17. ace3

    ace3 mouthify my wang.

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    Blain-child - 2000 Celica GT-S

    twin_turborx7 - :cool: i'd like to talk to you a bit more in-depth sometime, if possible. :)

    road course - http://www.midamericamotorplex.com

    pic:
     
  18. 98SHDiamond

    98SHDiamond Active Member

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    I would recommend Kumho Victoracer 225-50-16 for your Celica. Remember these are for track purpose. Good for about 500 miles. As sticky as Hoosier slicks but half the cost. You need to have this set on when you get to the track. Don't want to drive on regular street road. Best to go for the stickiest tires if you already know what your car can do.:beer:
     
  19. Balzz

    Balzz Guest

    I was told not to go to R compounds until I get really comfortable on the track. R compounds can cover up a lot of mistakes that will eventually hinder my progress.
     
  20. twin_turborx7

    twin_turborx7 Sponsor: DeeperImage.com

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    I just noticed this: Your car is 16' wheels stock? I would NOT go down then to a 15" wheel. Run the stock size, and squeeze a larger tire on the wheel. I thought you were 15" stock wanting to know whether to stay 15" or go UP to 16", my bad.

    Based on that track map, acceleration is not going to be as important as higher speeds will be and other than the one section of the course, the larger wheel/tires will come in handy.
     
  21. Section8

    Section8 .

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    These threads really make me want to sell my Steinway and buy an FD...but I'd kick myself later if I did that...
     
  22. 98SHDiamond

    98SHDiamond Active Member

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    For best results, do the first half of the day on regular stock tires and stock rims. Once you already comfortable to push your car to more limit. Switch to the Kumho V700 set to get a better driving envelope from your car. Remember with stock tires when hearing the tire skeeching is when you are quickly approaching 98% limits. On Kumho V700 there is no skeech at all, it will just break loose with no warning. You have to develop the feel and groove. It's seat time that's important. Change out your brake fluid, new oil change, check your pads or switch pads. :beer:
     
  23. ace3

    ace3 mouthify my wang.

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    they're considerably (by my wallet's considerations) more expensive than the new Kumho Ecsta V700 model. Plus, you can flip the Ecsta's around.

    Ecsta: http://www.tirerack.com/tires/kumho/ku_ecsta_v700.jsp
    Victoracer: http://www.tirerack.com/tires/kumho/ku_v700.jsp

    Victoracer (heat cycled) in 225/50/16 is $144
    Ecsta is $128

    only about a $60 difference, but it looks like the Ecsta has a much longer treadlife. I'm willing to sacrifice some performance if i don't have to go through a bunch of sets of tires this season.

    This is the first time this car has been road raced, BTW.
     
  24. ace3

    ace3 mouthify my wang.

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    yeah, 16" stock. The GT model has a 15", while the GTS upgrades to a 16".
     
  25. 99VFR

    99VFR Guest

    Like twin_turborx7 said, it kind of depends on the track, but if your stock wheels are 16in, there is no reason to downgrade yourself. My wheels are 16in stock too, and I haven't seen any reason to switch.

    Regarding jumping on slicks, when I was starting out the impetus was definitely there to make that move, but all my instructors said to start out on regular street tires to get a feel for the car. They were absolutely right. Things happen much, much faster on a slick, and they are not nearly as communicative or forgiving as squealing street tires. Not only that, but assuming you don't go balls to the wall your first time out (which is standard fare for new track drivers), then you will expire your precious slicks mcuh faster than a set of decent road tires.

    Another reason is the occasional rain day. Although I have found slicks to be way more forgiving than I had ever imagined in the rain, there are still the scary moments. Besides, if you are just starting out why waste an otherwise perfectly good wet track day dealing with that instead of learning the line (or wet line). Current road tires have unreal wet traction....

    My .02 (actually Fazle's .02, but who's counting?)
     

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