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Old 09-27-2005, 09:55 AM   #1
turbosporttsi
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Default 225/45/17 on a 7" wheel?

ok, right now i have 215/45's on my 17x7 wheels. im lookin for new tires...... what differences would a 225/45 tire give me from a performance aspect? tire rack says they will fit 7-8.5" wheels. so , i know they'll 'fit' but will they be worth getting?
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Old 09-27-2005, 10:12 AM   #2
HomerJay
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You're fine w/ that setup, as far as fitment goes. 225's will make your turn in a hair slower but give a little more grip. I don't think there will be that much of an improvement or a detraction from your performance w/ 215's. Of course this also depends on the which tires you get.
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Old 09-27-2005, 10:15 AM   #3
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Quote:
Originally Posted by HomerJay
225's will make your turn in a hair slower but give a little more grip.
Yep /\

ss
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Old 09-27-2005, 11:08 AM   #4
turbosporttsi
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ok, sweet. they will be the same tires,(S-03) just bigger. yeah, i figured turn in and overall handling wont be as dead on, but overall grip is what im lookin for. thats more important for back roads driving. besides, the tires have pretty stiff sidewalls as it is. so i guess the 225's will be the same, almost. esp with slightly increased tire pressure.
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Old 09-27-2005, 11:50 AM   #5
subysouth
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Quote:
Originally Posted by turbosporttsi
ok, sweet. they will be the same tires,(S-03) just bigger. yeah, i figured turn in and overall handling wont be as dead on, but overall grip is what im lookin for. thats more important for back roads driving. besides, the tires have pretty stiff sidewalls as it is. so i guess the 225's will be the same, almost. esp with slightly increased tire pressure.
Youve got the info but think about that thought for a sec. Which is more important on back roads driving? Turn-in or grip? IMO it would be turn-in as staying within the confines of your lane is imperative more than outright speed(grip.) You need as little slop as possible.

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Old 09-27-2005, 12:40 PM   #6
turbosporttsi
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i see what you're saying, but first of all, apparently its not that noticeable of a difference. and i was saying grip as the most important factor because the roads im referring to are really bumpy and nasty. when there's a bouncy road and you're goin like 50-60 thru a tight curve, i would want more grip over a crappy road. plus....... i never stay in my lane. (when its safe, of course) heheheh

i mean, its not like turn in will be the same as a 75 series sidewall!!! lol. but seriously, i understand. thanks for the info. its appreciated.
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Old 09-27-2005, 02:08 PM   #7
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Quote:
Originally Posted by turbosporttsi
i see what you're saying, but first of all, apparently its not that noticeable of a difference. and i was saying grip as the most important factor because the roads im referring to are really bumpy and nasty. when there's a bouncy road and you're goin like 50-60 thru a tight curve, i would want more grip over a crappy road. plus....... i never stay in my lane. (when its safe, of course) heheheh

i mean, its not like turn in will be the same as a 75 series sidewall!!! lol. but seriously, i understand. thanks for the info. its appreciated.
Yea these are gonna be subtle differences on either one. When you get to use the whole road are the good days.

Re: the bumpy part, I had a great exchange several years back with Dave at rallispec about the different pros and cons to suspensions. His feeling was to run the softest springs possible to make the car do what you wanted it to do and have that lower rate help maintain grip on our less than perfect real world roads. Info I have taken to heart. Track cars can handle much higher rates due to the generally smoother conditions.

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Old 09-27-2005, 10:32 PM   #8
turbosporttsi
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exactly.... alot of people get the stiffest of everything for their daily driver. in reality they will hop all over a bumpy road. decent springs with really stiff struts. thats where its at!
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Old 09-28-2005, 09:48 AM   #9
Jon Bogert
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Quote:
Youve got the info but think about that thought for a sec. Which is more important on back roads driving? Turn-in or grip? IMO it would be turn-in as staying within the confines of your lane is imperative more than outright speed(grip.) You need as little slop as possible.
Well said.

On a street car, maximum grip is almost meaningless. What percentage of the time are you truly cornering at your tires limits? .01% maybe? Less?

But every time you turn the wheel, you feel the sidewall response--the "turn-in"--and if it's sharp, it feels so good! Further, the accurate, precise steering response you get from well-supported, stiff sidewall tires will let you confidently approach your traction limits, play there, and come back safely.

I think of it like the difference between rigid, fixed piston brake calipers and the stock sliders. Your absolute braking power may not be any higher, but you can actually use everything you've got.
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