My 04 Colorado has 75000 miles and is on it's 3rd set of tires, the original size is 205/70R15. I have always stayed with the original size on all my vehicles. However these look small on my truck and I was wondering if I could go to a larger size, like 235/75R15. Would the larger size fit on my original rims? Any suggestions are appreciated. Thank You. PS truck is 2.8L 4 cylinder, auto trans, reg cab, if any of this matters.
tire size increase
glen1
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With the OEM size of 205/70R15 at 27.1" OD your best two choices that would not create problems are: 215/70R15 at 26.9" OD and 225/70R15 at 27.4" OD. Neither would have a significant effect on the speedo or power and both would work with a narrow wheel. I would choose the 225 because it has 3/4" wider tread and about 150# higher load rating. It would be what we used to call a "Plus one" upgrade.
The original post is a month old so he probably has already bought something.
The original post is a month old so he probably has already bought something.
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Yes my post above was an answer to a recent post made above mine which refers to a z71 with 265/75r15 oem size
OEM 2004-2008 z85 2wd is either 205/75/15 (base model) or 225/75/15.... not ×××/70/15. The OP made a mistake
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Like I said.... 265/75/16Currently have 265/75-15 on the truck now. I would like to go bigger with either 16 or 17 inch wheels. I would like to know what the max tire size I could run on this 2005 2x4 Z71 with no lift or modifications.
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If you want 17s then 265/70/17
Both are about 1 inch bigger in diameter than 265/75/15
... not a lot room to go bigger without lift or modification
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when your all done and everything clears. find someone with a tech2 (dealer has them) and have them do a tire size compensation to get your speedo back to reading right. or get good at math. 30mph reads 26etc...
I put 255/50ZR16s on my 2004. it had 225/75R15s on it. went from a 28.3 tall tire to a 26.4 tall tire. my speedo reads 8% faster than im actually going. so 50 MPH requires me to do 54mph on the clock.
But math is fun!!!
I also know my daughter wont be speeding as fast as she thinks she is
I put 255/50ZR16s on my 2004. it had 225/75R15s on it. went from a 28.3 tall tire to a 26.4 tall tire. my speedo reads 8% faster than im actually going. so 50 MPH requires me to do 54mph on the clock.
But math is fun!!!
I also know my daughter wont be speeding as fast as she thinks she is
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265/75/15 is the same size as 31/10.5/15.... suspension would not need to be modified, LOL
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mruss1993, a typical 31/10.5/15 has the same section width, .4" wider tread width, and .4" larger diameter than the 265/75R15 but it is rated at about 200lbs lower load capacity. The difference in size is only about 9 revs per mile. This is a tiny change and would not affect the gear ratio or speedo very much. The section width is the same so it shouldn't rub on anything either.
I knew they were really close in size and not worried about the load capacity, I have just read that there is not much clearance for tire size differences. Any idea on how big I can go keeping the stock wheel and not having to mess with the torsion bars.
I have a 2007 crew cab z71 4x4.
I have a 2007 crew cab z71 4x4.
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