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Old Feb 14, 2009 | 02:03 PM
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Default Over sized tire question
I am planning on putting 255/40ZR17's and 285/35ZR18's on a 2004 convertible. Rims are original GM thin spokes. Tires are Goodyear GS-D3.

Am I going to have any issues?
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Old Feb 14, 2009 | 04:31 PM
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Should be fine, I have seen people on cf that have 255's on the front, and I personally have 295's on the back of mine.
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Old Feb 14, 2009 | 04:43 PM
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Old Feb 14, 2009 | 05:00 PM
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Thanks for the comments, will the 295/? fit the stock rim?
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Old Feb 14, 2009 | 05:03 PM
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yep.
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Old Feb 14, 2009 | 06:24 PM
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A local member had Z06 sizes on his thin spokes with no issues....
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Old Feb 14, 2009 | 11:35 PM
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Yes, a 295 fits well..I like it
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Old Feb 16, 2009 | 11:07 AM
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Thank you all for your comments, I am going to bump the rear's to 295.
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I have had 265/295s on Y2Ks no problem. Right now I have 285/35/18 on a 9.5" wide rim and 295/40/18 on a 10.5 wide rim.
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Old Feb 16, 2009 | 12:37 PM
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Originally Posted by Rich-L
I am planning on putting 255/40ZR17's and 285/35ZR18's on a 2004 convertible. Rims are original GM thin spokes. Tires are Goodyear GS-D3.

Am I going to have any issues?
Just try to make sure that they are not more than a 1/2" TALLER OR SHORTER THAN THE ORIGINAL STOCK TIRES!

If they are and you get codes you will need to have the PCM programmed for the correct tire height

Thanks,Matt
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