Good laugh
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bubba;193874 wrote:
Wow...I have just came to the conclusion that most 240 drivers are simply retarded...those guys u were arguing against were just dumb...lol, you just wish you could be able to take place in a arguement like that. Actually they both were mostly right, just could not understand the whole subject
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Well I don't see how a skinnier tire could have more grip than a wider tire, unless a) the skinnier tire is a different rubber compound i.e. slick compared to a street tire or b) like the one guy said one is stretched, or perhaps over or under inflated, which wouldn't give the proper contact patch....
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lol at that guy saying tire size doesn't matter..... i'm going to put some 175's on my viper..... lol
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actually he is correct to a point. THis argument can be broken into a couple areas
- A softer tire needs more surface area to support itself, therefor most tires increase size to effectively increase the softness.
- By increasing surface area, you can decrease pressure to attain a comparable sidewall strength, while increasing grip through the use of a softer compound.
- A larger tire with a softer compound will wear equally with a smaller, harder compound tire, as the force per unit area/softness of the compound will be equal.
In drag racing, this guy was spot on. The main reason to increase size is to have sufficient structural integrity while keeping pressures low.
For you high schoolers, this works because PSI=pounds per square inch. If you maintain the same pounds, but increase the square inches, you effectively put more force into the larger of the two. So going larger with less pounds will equal the same force needed to support X amount of weight.
If you go to the strip and see a rail car with huge slicks, they are probably at about 4psi, and you can push them in about 4 inches if you try. Now on my car i cant go below about 12psi and still support the weight of the vehicle. -
faber it was a joke.... a bad one at that..
so gary your telling me that if i fitted a viper( using this for comparison) with a set of 175/65/15's it would have the same grip as it's stock tire size if the same tire compound was used? i would find that hard to beleave in any situation.
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what gary is talking about only is in affect for drag racing and a comparrison from street tires to slicks..
I know that was a joke.
But, if you take a 195 RT615 and compair it to a 315 RT615 with all things being equal(hieght, alignment correct, power....) the 315 will have more grip, but will cause other things to change: the cornering ability, tire wear, over/understeer. You have to have the rest of the car set up for the tires.
But effectively taking a civic and putting 255s all the way keep the rest of the car stock is going to make it handle and race(when corners are in affect) like shit. putting a 255 on the front well probably increase your traction in a straight line, but well make the car slower from more rotational mass.
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