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tire sizes to make s2000's faster

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Old Mar 23, 2010 | 11:57 AM
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Default tire sizes to make s2000's faster

wondering has anyone played with tire sizes in attempt to make the car faster??? like a 225/35r17 would be a lighter tire and lower the gear ratio, i was thinking about getting enkie rpf1's17's and going 215/35r17 + 225/35r17 rear,,, anyone done this or similar and got good results????
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Old Mar 23, 2010 | 12:23 PM
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faster like what?

the type of tire compound will do worlds more than the size. if you want traction, get tires (ie r-compound tires). but that might be different from just "faster."

don't worry much with the wheel/tire size and weight as a potential performance improvement. if you want gears, get gears, not smaller tires. and it's not worth $2k+ to save a few lbs of rotating mass for driving on the street. get wheels because you like them and think they look cool. that's a perfectly valid reason.

but if you really want speed, get boost, or better yet, just get a faster car.
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Old Mar 23, 2010 | 01:06 PM
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Originally Posted by ace123,Mar 23 2010, 12:23 PM
faster like what?

the type of tire compound will do worlds more than the size. if you want traction, get tires (ie r-compound tires). but that might be different from just "faster."

don't worry much with the wheel/tire size and weight as a potential performance improvement. if you want gears, get gears, not smaller tires. and it's not worth $2k+ to save a few lbs of rotating mass for driving on the street. get wheels because you like them and think they look cool. that's a perfectly valid reason.

but if you really want speed, get boost, or better yet, just get a faster car.
I believe he is referring to the change in gearing that a smaller diameter wheel would have, not the change in grip, thus making the car accelerate faster
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Old Mar 23, 2010 | 02:20 PM
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so wud it work anybody actually a fan of this idea
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Old Mar 23, 2010 | 05:50 PM
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sounds like it will work, but I agree with ace123; if you want shorter effective gearing, get final drive gears. smaller diameter tyres would look odd in the guards if they were a lot smaller, and gears would be a more effective way of increasing the ratio.
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Old Mar 23, 2010 | 06:21 PM
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Originally Posted by ace123,Mar 23 2010, 12:23 PM
faster like what?

the type of tire compound will do worlds more than the size. if you want traction, get tires (ie r-compound tires). but that might be different from just "faster."

don't worry much with the wheel/tire size and weight as a potential performance improvement. if you want gears, get gears, not smaller tires. and it's not worth $2k+ to save a few lbs of rotating mass for driving on the street. get wheels because you like them and think they look cool. that's a perfectly valid reason.

but if you really want speed, get boost, or better yet, just get a faster car.
I love it when people dont consider on your idea other than to tell you its a bad idea then list all the things they think you should do.

Having said that, Its a reasonable idea to get a smaller diameter. Though a smaller width would be lighter I think the loss of grip would outweigh the benefit of weight savings.

Creative ideas never hurt to try, no matter what the nay-sayers say.

Good luck.
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Old Mar 23, 2010 | 06:39 PM
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^ it sounds like it should work. though i will say that it would look very silly unless you lower the car as well, and still may look silly.

as far as contact patch goes it should be roughly the same size as stock for an ap1 considering that a 215 is wider than a 205 and a 225 is the same as 225. that is if i am correct in thinking that the stock sizes are 205/55r16 and 225/50r16

as for size difference you will be aprox 2" smaller than stock which will drop the car without modding suspension 1 inch. and will also make your speedo read aprox 8% higher than you are actually going.

i guess that in a straight line you would be a little faster, but i would suggest that if you are wanting the effect that different diff would have, go get a different diff.
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Old Mar 23, 2010 | 06:41 PM
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also consider that with such a low profile tire, you are almost certainly going to bend rims on potholes unless you are super carefull.
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Old Mar 23, 2010 | 06:49 PM
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Get the RE-11's BTW
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Old Mar 24, 2010 | 04:25 AM
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What, like 155/80-18 to get rolling friction and aerodynamic drag down?
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