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Silverado & Fullsize Pick-ups The Silverado has been one of the best selling trucks in the US for decades, and is truly proven to be "like a rock".

2014 Chevy Silverado
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  #1  
Old 05-08-2010, 05:26 PM
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Default 245 vs 265 Tires

My factory LT245/75/R16's on my 2006 HD are ready to be replaced. Would like to upgrade to 265's. How much will this effect my speedometer and fuel mileage. Pull a horse trailer in summer to shows within a 100 miles. Will it pull better?? How about warranty?

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iowa boy
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  #2  
Old 05-08-2010, 06:37 PM
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2006 Chevrolet Silverado 2500
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won't be a big difference. but it will not pull any better. The taller the tire the more side wall there is to flex. the more flex, the more it will sway. should not be a whole lot in gas or speedometer. but the taller the tire, the lower it makes the gear in your truck.
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Old 05-21-2010, 11:18 AM
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As well as the tire being taller, it will have more tire on the ground since it is a wider tire. The 265 is a good fit for the truck. I had them on my 99 1500 and my speedometer was almost dead on. So no need to worry with that. And as far as the sidewall flex, I don't think it will be that bad (I worked as a tire salesman for 3 years just before my wife was transfered to Cuba) but if it is something you are still worried about, try a load rage D or E tire. I would recomend the D, it'll give some stiffness without being as tough as the E.
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Old 05-22-2010, 07:08 PM
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The bigger the better!
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Old 05-23-2010, 08:55 AM
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265's on my 1500
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Old 05-23-2010, 10:03 AM
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My 04 came new with 235's from the factory and i went to 265/70/16, no noticable differance. Some where I read that there were 2 tire sizes available from chevy for the 04 235 and 265. So it worked well for me. 1 month ago I replaced the wore out 265/70/16 with 265/75/16, worst mistake i could have made. This time it threw the speedometer off 5 mph. I will not get into the other issues, but I hope this helps.
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Old 05-23-2010, 08:03 PM
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Ive got the 285/75/16's on my 04 and the only difference i have found so far is that speedo is 3 miles slower than actual speed but other than that my truck handles and pulls fine.
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Old 05-24-2010, 04:40 PM
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when it was time to replace my tires (same size) my tire dealer told me not to go to the 265 tire size, said i would get better mileage with the 245 tire size.

so thats what i did and truck runs and drives good, for a 2500 series.
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Old 05-24-2010, 11:40 PM
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Hi iowa boy,

Welcome to the Chevy Forums.

Those factory tires may be 10-ply E-rated radials. They came standard on many 2500HD models. You can tell if you look for the inflation pressure, it will be 80PSI max. If you have load range E tires, sidewall flex won't be much of an issue.

The wider (and at lower inflation pressures, for C&D rated radials, softer) tires will have a poor effect on gas mileage. You'll also notice a difference in tire performance when you tow, if you change from Es to a lower rated tire.

FWIW, I kept the same size and brand tires on my 2004HD when I changed to custom rims, because I liked the performance and longevity of my original E-radials. I thought 65,000 miles for one set of highway radials was hard to beat.
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Old 05-25-2010, 08:19 AM
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wow i didnt relize there was this much to consider on tires buuut anywayz ive got
my tires are mastercraft c/t's 265/75/R16 on my 95 k1500 and the speedo is dead on and im also runnin a 10in wide rim so im pretty sure you'll be fine with 265/75's and ive pulled trailors with boats on em and cars and tractors so i think you'll be fine haulin some horses
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Old 05-25-2010, 08:19 AM
 
 
 
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16, 245, 265, 70, 75, chevy, difference, fitting, hd, silverado, siverado, speedometer, sururban, tahoe, tire, tires


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