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How much does tire width affect traction?

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Old Feb 16, 2017 | 12:29 PM
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Default How much does tire width affect traction?

Hello all,

I'm currently building my motor to make about 450rwhp. Right now I have a set of corvette sawblade rims (17x8.5 front, 17x9.5 rear) with bfgoodrich sport comp 2s all around. I was thinking of replacing them with some of the c6 5 spoke rims, in a 17x9.5 up front and an 18x10.5 rear.

my question is, will this extra inch of width provide me that much more traction? Or is my tire selection more important?
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Old Feb 16, 2017 | 12:39 PM
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While there are other factors that play into traction, width of a tire is one of the most important in my opinion. Looking at it from strictly a scientific standpoint, the more rubber you can apply to the surface, the more traction you are going to have. That's why big tire guys can do what they do.
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Old Feb 17, 2017 | 08:09 AM
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Or is my tire selection more important?
Ultimately tire selection is more important. A 10" drag radial is going to be infinitely better than a 12" basic summer tire.

But width also plays a factor, as in a 11" drag radial is going to hook slightly better than a 10" especially if you have the power.

For your setup, you probably won't notice much improvement going from a 10" tire to something slightly bigger and with a good compound and an 11" tire is going to be overkill for your power. A 275/40/17 slick or DR will deadhook.
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Old Feb 19, 2017 | 11:44 PM
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Okay. I'm not planning on drag racing the car, if anything some freeway pulls, but moreso than that I wanted to build the car more for handling and corner carving than just straight line. I figured on top of the suspension upgrades widening the tires would help as well.
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Old Feb 24, 2017 | 11:42 AM
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Tire compound is infinitely more important than width. A 285mm drag radial will pop a wheelie, a 335 summer tire can spin the wheels through 2nd and 3rd gear. From the sounds of it a sticky street radial in a 305 may be best.
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Old Feb 24, 2017 | 02:11 PM
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Originally Posted by HappySalesman
Okay. I'm not planning on drag racing the car, if anything some freeway pulls, but moreso than that I wanted to build the car more for handling and corner carving than just straight line. I figured on top of the suspension upgrades widening the tires would help as well.
Originally Posted by 01bird58
Tire compound is infinitely more important than width. A 285mm drag radial will pop a wheelie, a 335 summer tire can spin the wheels through 2nd and 3rd gear. From the sounds of it a sticky street radial in a 305 may be best.
In the same way a 185 summer tire will outhandle a 335 drag slick around corners. Unless your plans are to build a car that will do nothing but go in a straight line, there is no need for a drag radial. When it comes to handling the soft sidewall makes DR's handle like a city bus.

I know when I went from 275's to 315's I noticed a huge improvement in grip and braking.
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