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4MPH with just tires!!!

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Old Mar 2, 2008 | 03:28 PM
  #16  
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Sounds like a plan.
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Old Mar 2, 2008 | 04:10 PM
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Originally Posted by 4WS@TopLevelAuto
u trapped so low cause you were knocking in 4th.... your car is very fast 1-3 though =-)


With the taller tires i stayed in my power band during the entire run.. Cross the line around 7500 i believe... versus on stock tires i would be around 8k


that was a 94 trap at 119 on pump... On my meth i trapped 120 with a 97 mph trap in the 1/8th... it was breaking up really bad so i was making no power or i would have trapped 123-124.

Cheers!
You do not have any facts regarding the state of tune, nor whether or not Evil_Evo_VIII's car was knocking so I suggest you stick to the facts.

Save your negative sales tactics for another forum that allows such behaviour.
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Old Mar 2, 2008 | 06:42 PM
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Lets try not to thread hijack
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Old Mar 3, 2008 | 08:19 PM
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isn't the stock tire a 45 size tire? how does going wider allow you to have a better mph?
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Old Mar 3, 2008 | 08:24 PM
  #20  
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I thought they were talking about a taller tire which makes sense.
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Old Mar 3, 2008 | 08:33 PM
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Originally Posted by evolved83
isn't the stock tire a 45 size tire? how does going wider allow you to have a better mph?
I think by mounting 255 45 17s on stock 17 its makes the tires alittle taller then
stock 235/45 17s on the same rim. Correct me if im wrong.
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Old Mar 3, 2008 | 09:35 PM
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No you got it rite. Due to the fact that the larger tire is squeezed on a the same size rim the outer diam. goes up. The stock wheel and tire combo has a diam. of 25.1 and my new combo has a diam. of 26.1. Almost all tire manufacturers have this info on there web sites to let you know the exact size and the amount of rotations that tire will give you at x amount of speed. This combo is not for corners and I would only recomend it to someone looking for those extra mph in the quarter. Its a great ride and handles good enough for me but will increase body roll. Thanks fo the questions.
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Old Mar 4, 2008 | 11:06 AM
  #23  
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yo jeff what psi were u running in the tires
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Old Mar 4, 2008 | 11:47 AM
  #24  
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I tried evrything from 30psi all the way down to 21psi, but I still need to lower my 2 step.
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Old Mar 4, 2008 | 02:51 PM
  #25  
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How high are you leaving? I have found its a pretty tight balance to leave correctly and not spin...or end up with a little bog. My clutch action is pretty solid but leaving at 6375 I can leave with a minimum of spin and pull 1.6's, drop it to 6k or so and they instantly turn into 1.7's no other changes.
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Old Mar 4, 2008 | 03:51 PM
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Ok here's my question. I'm another victim of the infamous short Evo IX 4th gear. This past weekend I ran my best of an 11.66@117mph hitting the rev limiter in 4th just at the finish line at around 8,300rpms. I have another racing event coming up in April and i'd like to do whatever I can to get a better time but money is somewhat tight for cams still. What will this tire size change do for me? With all things the same will I see a 3-4mph increase and potentially drop my 1/4 time by 2-3 tenths?
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Old Mar 4, 2008 | 05:48 PM
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From: Central Jersey
Originally Posted by ImprezvSE
No you got it rite. Due to the fact that the larger tire is squeezed on a the same size rim the outer diam. goes up. The stock wheel and tire combo has a diam. of 25.1 and my new combo has a diam. of 26.1. Almost all tire manufacturers have this info on there web sites to let you know the exact size and the amount of rotations that tire will give you at x amount of speed. This combo is not for corners and I would only recomend it to someone looking for those extra mph in the quarter. Its a great ride and handles good enough for me but will increase body roll. Thanks fo the questions.
thanks for the clarification
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Old Mar 4, 2008 | 06:19 PM
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Very cool news Impresev. I just bought 4 new tires today but went with same as stock 235/45 R17. I have Sumitomos now but haven't flexed them at all yet... Pm me if you roll out there again..
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Old Mar 4, 2008 | 07:36 PM
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Originally Posted by RyuEvoIX
Ok here's my question. I'm another victim of the infamous short Evo IX 4th gear. This past weekend I ran my best of an 11.66@117mph hitting the rev limiter in 4th just at the finish line at around 8,300rpms. I have another racing event coming up in April and i'd like to do whatever I can to get a better time but money is somewhat tight for cams still. What will this tire size change do for me? With all things the same will I see a 3-4mph increase and potentially drop my 1/4 time by 2-3 tenths?

Yes if you run this tire combo you will pick up aprox. 4 mph with no other changes.
I would also look into a clutch if you can swing it, I picked up some mph when I switched from stock. The stock clutch can sometimes slip at the higher rpm's and you might not even know it.
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Old Mar 5, 2008 | 05:01 AM
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Originally Posted by ImprezvSE
Yes if you run this tire combo you will pick up aprox. 4 mph with no other changes.
I would also look into a clutch if you can swing it, I picked up some mph when I switched from stock. The stock clutch can sometimes slip at the higher rpm's and you might not even know it.

I have an ACT-HD Guess I should add that to my signature huh? lol Thanks ordering the tires for sure before April 13th 11.4x here I come!
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