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Taller tire to change gear?

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Old May 13, 2006 | 07:01 AM
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Taller tire to change gear?

Anyone running a taller tire at the drag strip? Im out of gear. 131 at 8500rpm. I was thinking a 235/50/17 or 245/50/17 would give me 4-7 more mph at the same rpm. Curious if these sizes would fit witout any problems. Car isnt lowered. I dont wanna shift to 5th as it seems to not give any change in time or speed and I messed up the 5th gear syncro once already doing that.

Anyone doing this?
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Old May 14, 2006 | 11:37 AM
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Im the only one with this problem?


Guess im the fastest evo in the world.
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Old May 14, 2006 | 07:24 PM
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how are you hitting 131mph in 4th gear?
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Old May 15, 2006 | 03:54 PM
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I managed to fit 245 45 17's on which work rather well which gave me 2-3 more mph in the 1/8 for 3rd
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Old May 15, 2006 | 07:57 PM
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You should be a touch faster at 8,500... more like 135ish... perhaps they are worn tires though.

And yes you could run a taller tire but it will most likely hurt the ET some but raise the MPH slightly. You are better off running another 100-200 rpms. At 8750 you should be about 140.
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Old May 15, 2006 | 08:01 PM
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And if you are trapping at 140+ your motor will probably start getting upset at the power your making so you build it and rev it to 10k... That will solve your problem perfectly.
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Old May 15, 2006 | 08:02 PM
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From: Winona, MN
Originally Posted by superscout03
how are you hitting 131mph in 4th gear?
Because he doesnt have an MR which as a shorter 4th gear.
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Old May 16, 2006 | 06:07 PM
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Thing is the nitrous i added gave me about 150 more hp on the dyno. I dont see where i have any room to go faster with the gearing i have.
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Old May 16, 2006 | 10:07 PM
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Like I said, you should be fine.. just rev it higher. I dont understand why you cant rev it to 8750 or so. You should be fine till around the 140 mark.
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