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    1. #1
      Join Date
      Nov 2010
      Posts
      1,387
      Country Flag: United States

      wide rear tire advantages????

      was wondering why people choose the fattest rear wheel possible? it seems to be max traction but can't that be solve by choosing a better tire compound? I mean how much of a difference would a inch make or 3 or 4... (more so on the rear wheels.)



      My rear is only 8 inches, and was curious if it would be bump it up to 9.5 and maybe drop it down to 18" instead of 19" and try and fit a larger compound
      68 Camaro RS twin turbo
      https://www.pro-touring.com/threads/...d-Intent-V-2-0

      1993 Toyota Supra 6768 Built Single Turbo


      Slow Lifted Jeep No TURBO :(

      Randal F


    2. #2
      Join Date
      Mar 2005
      Location
      Texan Back in Texas!
      Posts
      675
      Country Flag: United States
      For looks, steam roller wheels get me all excited. And if a sticky compound is good at 8" wide just think of the grip at 12" wide. Will it perform better, in a corner or straignht line? How much power are you trying to put down? Are you willing to suffer the additional weight? These are all questions you have to ask.
      1965 Falcon Hardtop

      However long you think your project will take, double it and you might be halfway right.

      Build Thread: https://www.pro-touring.com/showthre...847#post798847

    3. #3
      Join Date
      Nov 2010
      Posts
      1,387
      Country Flag: United States
      Well I think if I am lucky i will be getting 400 rwd horsepower and maybe 450lbs of torque. Well its a 68 camaro I am asking about, should I be more concerned about weight or grip? Isn't it true the heavier your movable parts in your drive train the more power it takes to run them? This is more of a pro touring daily driver too!!! So maybe if I can fit a 9.5" rim on it with mini tubing and drop it down from an 19 inch to an 18 inch diameter I can run a fatter wheel and keep the weight about the same with no rubbing issues.
      68 Camaro RS twin turbo
      https://www.pro-touring.com/threads/...d-Intent-V-2-0

      1993 Toyota Supra 6768 Built Single Turbo


      Slow Lifted Jeep No TURBO :(

      Randal F

    4. #4
      Join Date
      Apr 2009
      Location
      san diego
      Posts
      5,101
      Country Flag: United States
      Too much tire will slow you down when accelerating. But you cant really have too much tire when cornering. But you will have diminishing returns.

    5. #5
      Join Date
      Aug 2010
      Location
      S. FL
      Posts
      70
      275-285 is about as large as you can go with stock wheelhouses, if you nail the backspace just right.
      I installed mini-tubs on mine recently (69 Camaro Vert) but my wheelhouses had been patched and needed to be changed anyway.
      I run 305/35/18 now and just like the looks of the fat rubber.

    6. #6
      Join Date
      Nov 2010
      Posts
      1,387
      Country Flag: United States
      Ok, so it basically a trade off regardless of what I do, I just need to pick a preference, if want speed, or better handling, maybe a 9.5 rear would be cool, and it would meet me somewhere in the middle
      68 Camaro RS twin turbo
      https://www.pro-touring.com/threads/...d-Intent-V-2-0

      1993 Toyota Supra 6768 Built Single Turbo


      Slow Lifted Jeep No TURBO :(

      Randal F

    7. #7
      Join Date
      Apr 2006
      Location
      Huntington Beach, CA
      Posts
      2,420
      Country Flag: United States
      No need to minitub to fit a 9.5" width rim on a 68 camaro. If you roll the fender lips you can fit 10"
      Please Subscribe to the AutoXandTrack YouTube Channel

      Autocross and track blog about running autocross and track events with pro touring cars

    8. #8
      Join Date
      Feb 2011
      Posts
      11
      Many people say that performance is more important when cornering and less weight is more important on the track (for speed purposes). This is the argument that has raged for a long time as people try to decide where their "perfect balance" is when it comes to tires. A few things to consider:

      -wider tires means more surface area is touching the road

      -some "oversize" tires are just for looks and don't necessarily add any more gain

      -make sure you consider your driving habits when buying tires as they are not all created for every instance


      Regards,

      L.M.
      Freedom Rims
      Performance Tires

    9. #9
      Join Date
      Sep 2006
      Location
      Henderson,NV
      Posts
      2,870
      Country Flag: United States
      Stagger is also a big factor. If you have a 245 up front, does a 335 out back really make sense? It doesn't for handling and chassis balance....
      Todd

    10. #10
      Join Date
      Nov 2010
      Posts
      1,387
      Country Flag: United States
      so who thinks this would be a cool setup, 18x8 on the front and 19x9.5 in the rear, this is for looks and more a better grip, during acceleration
      68 Camaro RS twin turbo
      https://www.pro-touring.com/threads/...d-Intent-V-2-0

      1993 Toyota Supra 6768 Built Single Turbo


      Slow Lifted Jeep No TURBO :(

      Randal F

    11. #11
      Join Date
      Nov 2010
      Posts
      1,387
      Country Flag: United States
      Ordered them!!!! yea
      68 Camaro RS twin turbo
      https://www.pro-touring.com/threads/...d-Intent-V-2-0

      1993 Toyota Supra 6768 Built Single Turbo


      Slow Lifted Jeep No TURBO :(

      Randal F

    12. #12
      Join Date
      Apr 2009
      Location
      san diego
      Posts
      5,101
      Country Flag: United States
      I run a 17 x 8 and 17 x 9.5 on my falcon. That equates to a 245 and 275 tire. Should be a good setup. It might be a little small on the front depending on your CG height and front end weight.

    13. #13
      Join Date
      Oct 2006
      Location
      Corona, CA
      Posts
      1,948
      Country Flag: United States
      Like said above, a stock camaro tub will easily take a9.5" wide wheel, and a 275/ wide tire, with the right offset. Only reason to mini-tub is to go wider than a 275, like 295 an greater. The benefit? Looks, and a little performance too, but you'll need all the suspension mods and horse power to go with it. There's a reason why new vettes are coming out with 18/19, and 19/20 combos...

    14. #14
      Join Date
      Sep 2009
      Posts
      53
      compound is much more important than width however more width helps a softer compound last a lot longer and is more forgiving for suspension tuning, and as mentioned there is a point of deminishing returns but you also have to take weight into consideration, since a little 2000 lb racecar would be great using something like a 245mm treadwidth while a 3500lb streetcar would need a 335mm treadwidth to get near the same grip givin the same compound, cause of all the extra weight and momentum pushing it around.

    15. #15
      Join Date
      Dec 2010
      Location
      Fredericksburg, VA.
      Posts
      3,164
      Country Flag: United States
      A wide rear tire makes the yahoos that pull up next to you at a stop light think twice. The wider the tires the more attitude the car wearing them has.
      Steve Hayes
      "Dust Off"
      68 Camaro

      Support the RPM Act
      https://www.sema.org/rpm-faq.

    16. #16
      Join Date
      Jul 2005
      Location
      Eastern Virginia
      Posts
      3,963
      Country Flag: United States
      I have 17X8 front & 17X9.5 with 245 & 275 width tires. I would like to with 315s out back & 255 or 265 fronts in the front.
      Scot
      86 Monte SS


    17. #17
      Join Date
      Feb 2011
      Location
      North Idaho
      Posts
      57
      I always been told that you don't want more than a 35mm difference between the front and rear tires

    18. #18
      Join Date
      Sep 2006
      Location
      Henderson,NV
      Posts
      2,870
      Country Flag: United States
      Tell that to GM & Dodge. 335/275 345/285 Z06 Viper I agree with you, little is better.
      Todd

    19. #19
      Join Date
      Feb 2007
      Location
      The Declining Market
      Posts
      46
      It's amazing what the Nissan GTR can do with just a 255 front and 285 rear. Makes my 245/275 combo acceptable.
      Dan
      1969 Chevrolet Camaro
      /DSE/SDPC-LS7/T-56/FORGELINE/BAER/VAPORWORX/SPEARTECH
      /DAKOTA-DIGITAL/RECARO/MOMO
      /MSP-FAB/BLACKTECH/


    20. #20
      Join Date
      Sep 2006
      Location
      Henderson,NV
      Posts
      2,870
      Country Flag: United States
      Except yours ain't all wheel drive...
      Todd

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