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handling with 315's?

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Old Feb 21, 2003 | 08:50 PM
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last of the Z28's's Avatar
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From: rochester,ny
Default handling with 315's?

how well does the car perform with 315's on the rear with factory size 17's on front?thanks
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Old Feb 21, 2003 | 11:50 PM
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Default Re: handling with 315's?

I'm running Yoko 032Rs all around. The fronts are 275s on 17X9s. The rears are 315s on 17X10.5s.
The 315s in the 032s seem to be a bit on the small side for a 315-anyway they seem to work OK with the 10.5 width. It would most likely work better on a 11 inch wheel though. All in all, I'm happy with my set-up. About the only things I do with the car is a few autoxs and alot of play in the mountains. I might try a open practice this year but that will be about it. No road race stuff either so I'm running at a bit of a disadvantage compared to some others when it comes to experience. I am going to get two more 17X10.5s for the front and slap some 315s up front.
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Old Feb 22, 2003 | 12:10 AM
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Default Re: handling with 315's?

hows it take the turns compared to just your old 275 40,s?does the rear seem squishy or does it grip allitl more?
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Old Feb 22, 2003 | 12:11 AM
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Default Re: handling with 315's?

oh ya any speedo calibration needed? thanks
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Old Feb 22, 2003 | 01:05 AM
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Default Re: handling with 315's?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by last of the Z28's:
<strong> oh ya any speedo calibration needed? thanks </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Depends on the aspect ratio of the tire you go with. I think a 315/35 is the same as a 275/40, someone correct me if im wrong
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Old Feb 22, 2003 | 11:02 PM
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Default Re: handling with 315's?

Go to TireRack.com, they have a spec. chart that shows the diameter of each tire. I think that my Yoko 315s were a bit taller than my Firestone Firehawk 275s. Most speedos are a bit conservative on the calibration, so when your speedo says you are going 60mph-you are actually going 57 or something. If they are just a smidge larger-great, it would fix the error. I wouldn't think it would be enough difference to throw things way off. Don't know for sure as I have 4.10s in the rear with no recalibration so it's off anyway.
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