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2008 Z71 Silverado Tire Size Change?
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asgf
New User
Mar 1, 2011, 7:54 PM
Post #1 of 5
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2008 Z71 Silverado Tire Size Change?
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I have a 2008 Z71 Crew Cab Silverado. I recently picked up a wicked screw. It has a 3/8 shank on it, with 31,000 on my Dueler A/T and 1/8" of tread left I decided I would just replace the tires. I've decided on the Nitto Terra Grappler A/T, unless someone knows something I don't about them. My OEM size is 265/65R18. A horrible size to find tires in stock somewhere. Anyways, I was wondering if it is possible to put a 275/65R18 tire on with out having to buy new wheels?
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 1, 2011, 8:14 PM
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Re: 2008 Z71 Silverado Tire Size Change?
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You can put that tire on that wheel but i wouldn't advise it. That tire is considerably taller and will adversely effect the ABS, the speedometer, the transmission shift points and the fuel mileage. If you could find it in a 275/60/18, that would be a better match, same height, slightly wider. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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asgf
New User
Mar 1, 2011, 8:43 PM
Post #3 of 5
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Re: 2008 Z71 Silverado Tire Size Change?
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I am completely ignorant when it comes to tire size. I thought the second number was the height of the tire. How is it that using a 275/60R18 would be the same size? I'm just curious, I will heed your advice.
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Hammer Time
Ultimate Carjunky
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Mar 1, 2011, 8:47 PM
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Re: 2008 Z71 Silverado Tire Size Change?
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The second number is the aspect ratio. It is a percentage meaning the sidewall is 60% of the width. You need to reduce the aspect ratio to counter the height you gained from the cross section increase. Trust me. The size i gave you is closer in height. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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asgf
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Mar 1, 2011, 8:55 PM
Post #5 of 5
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Re: 2008 Z71 Silverado Tire Size Change?
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Ok, it makes sense now. Thank you for the explanation.
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