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Resizing back down to stock, 5.3L 2005 Silverado #4574330
11/14/17 09:54 PM
11/14/17 09:54 PM
Joined: Sep 2008
Posts: 3,987
Southeast Texas
gfh77665 Offline OP
gfh77665  Offline OP
Joined: Sep 2008
Posts: 3,987
Southeast Texas
So I finally bought a flood replacement truck. 2005 Silverado with the 5.3. The truck is in good condition, but has somewhat higher mileage (147,000). The previous owner is running 265-70-17 tires, but I know the stock size is 245-70-17.

Whats your thoughts on this? It seems the 5.3 V8 handles the larger size tires OK. Run them until needing replacements? Thanks.

Re: Resizing back down to stock, 5.3L 2005 Silverado [Re: gfh77665] #4574334
11/14/17 09:58 PM
11/14/17 09:58 PM
Joined: Jul 2016
Posts: 1,683
Jacksonville, FL
FlyNavyP3 Offline
FlyNavyP3  Offline
Joined: Jul 2016
Posts: 1,683
Jacksonville, FL
If they're in good shape and you don't mind how it looks or drives you might as well use up the tread on the current tires then replace them in whatever size you'd prefer when its due. Existing tire miles are essentially free tire miles. I say run them. I think the 4wd or Z71 trucks came with the 265 tire stock.


Luke
P-3C and P-8A Maritime Weapons and Tactics Instructor, Instructor Tactical Coordinator and Mission Commander
Re: Resizing back down to stock, 5.3L 2005 Silverado [Re: gfh77665] #4574337
11/14/17 10:01 PM
11/14/17 10:01 PM
Joined: Sep 2008
Posts: 3,987
Southeast Texas
gfh77665 Offline OP
gfh77665  Offline OP
Joined: Sep 2008
Posts: 3,987
Southeast Texas
You are right about the economics of it.

I bet the 4WD or Z-71 trucks have lower gearing to compensate for the taller size. They probably have to have lower gearing to keep the speedo correct. Mine currently reads 4-5 miles too low at highway speeds.

Re: Resizing back down to stock, 5.3L 2005 Silverado [Re: gfh77665] #4574338
11/14/17 10:01 PM
11/14/17 10:01 PM
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
Alex_V Offline
Alex_V  Offline
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
What flynavy said. ^


To quote a friend, "Synthetics, man."

'85 GMC C3500, 454, 132K
'82 Mercedes 300CD, OM617 turbo, 173K (totaled 2018, in rehab)
'85 Mercedes 300TD, OM617 turbo, 217K (wife's)
'67 Suburban, 350, 331K
Re: Resizing back down to stock, 5.3L 2005 Silverado [Re: gfh77665] #4574526
11/15/17 06:16 AM
11/15/17 06:16 AM
Joined: Oct 2005
Posts: 4,627
Atlanta
DuckRyder Offline
DuckRyder  Offline
Joined: Oct 2005
Posts: 4,627
Atlanta
The speedometer would drive me nuts.

Id have to put the correct size tires on it (probably) or have it programmed for the wrong size.

Last edited by DuckRyder; 11/15/17 06:23 AM.

Robert
  • 2007 Toyota Prius Touring
  • 2005 Honda Civic Sedan
  • 1972 Ford F100
Re: Resizing back down to stock, 5.3L 2005 Silverado [Re: gfh77665] #4574533
11/15/17 06:38 AM
11/15/17 06:38 AM
Joined: Jan 2011
Posts: 3,255
PV Az
AZjeff Online content
AZjeff  Online Content
Joined: Jan 2011
Posts: 3,255
PV Az
When I replace tires on trucks I upsize 1-2 tire sizes and it usually puts my speedo spot on. With stock size tires the speedometer runs fast on every car/truck I've owned since I starting checking with a GPS. OP's 265s are 31.6" diameter and stock 245s are 30.5" diameter, a 3.6% increase. Unless he tows or hauls heavy they won't matter a bit, and probably look a little better. MPGs could be a few tenths better highway driving.


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
16 Silverado 1500 4.3, DI, AFM 5W-30 PP

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: Resizing back down to stock, 5.3L 2005 Silverado [Re: gfh77665] #4574537
11/15/17 06:45 AM
11/15/17 06:45 AM
Joined: May 2016
Posts: 32
WI
W9HDG Offline
W9HDG  Offline
Joined: May 2016
Posts: 32
WI
Are you sure those are not stock? I had a 2007 Sierra Z71 (and my 2012 Suburban) with that size as stock.

Both of those vehicles came that way from the factory and it shows as an added option due to a package on the vehicle (Z71, etc).

I do like narrower tires for snow however and I'm sure the truck would seem peppier with those slightly smaller tires.

Either way, congrats on finding a new ride and enjoy!

Re: Resizing back down to stock, 5.3L 2005 Silverado [Re: gfh77665] #4574566
11/15/17 07:13 AM
11/15/17 07:13 AM
Joined: Jan 2016
Posts: 168
South Louisiana
Soggydog Offline
Soggydog  Offline
Joined: Jan 2016
Posts: 168
South Louisiana
We have an 05' GMC K1500, 4x4, 4.8L, lwb. base model in our fleet at work. The label in the drivers door jamb shows 265/70-17s. All the 2wd C1500's, same vintage run 245/70-17.
Is the label missing on your truck?

Last edited by Soggydog; 11/15/17 07:14 AM.

Currently running...
2011 Ford F250 4x4 6.7L, 2011 Toyota Camry SE 2.5L, 2002 Dodge Caravan 3.3L,
2012 Honda Rincon,2012 Honda Rancher AT,09 Honda Trx90
Re: Resizing back down to stock, 5.3L 2005 Silverado [Re: gfh77665] #4574701
11/15/17 09:02 AM
11/15/17 09:02 AM
Joined: Sep 2008
Posts: 3,987
Southeast Texas
gfh77665 Offline OP
gfh77665  Offline OP
Joined: Sep 2008
Posts: 3,987
Southeast Texas
Yes, the 245's are the stock size. I went by DT to air everything up the day I got it, and even aired up the spare, which is still a 245. DT checked, and they indicate 245 for my truck. Tirerack says the same, too (mine is a 2 WD).

Re: Resizing back down to stock, 5.3L 2005 Silverado [Re: gfh77665] #4574863
11/15/17 11:12 AM
11/15/17 11:12 AM
Joined: Feb 2013
Posts: 11,088
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 11,088
Phoenix, AZ
I'd run these until it's time for new tires, no problem. But I'd go back to stock size when it's time for replacement.


2015 Hyundai Sonata 2.4L 88k Motorcraft Synthetic Blend 5w30 & OEM
2000 Toyota Camry 2.2L 231k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: Resizing back down to stock, 5.3L 2005 Silverado [Re: FlyNavyP3] #4574966
11/15/17 01:11 PM
11/15/17 01:11 PM
Joined: Mar 2015
Posts: 401
Southern Illinois
ccap41 Offline
ccap41  Offline
Joined: Mar 2015
Posts: 401
Southern Illinois
Originally Posted By: FlyNavyP3
If they're in good shape and you don't mind how it looks or drives you might as well use up the tread on the current tires then replace them in whatever size you'd prefer when its due. Existing tire miles are essentially free tire miles. I say run them. I think the 4wd or Z71 trucks came with the 265 tire stock.


This is what I'd do as well. Unless I was really disliking the ride/tires/fuel economy/etc. I'd use them up before buying new ones.

Also, for [censored], I checked out 255/70R17's as well as a middle ground if you did like something slightly larger. that could be a possibility down the road as well.


2016 Ford Focus Titanium Hatch 2.0
Oil: Mobil 2 EP 0w-20
Filter: Fram Ultra 3614
Re: Resizing back down to stock, 5.3L 2005 Silverado [Re: gfh77665] #4575226
11/15/17 04:45 PM
11/15/17 04:45 PM
Joined: Jun 2013
Posts: 1,125
iowa
Traction Offline
Traction  Offline
Joined: Jun 2013
Posts: 1,125
iowa
You could easily run the 265's if you wanted. It actually corrected the speedo on my 08 2WD Silverado. I ran 245 Blizzak's in the winter, and 265's in the summer.

Last edited by Traction; 11/15/17 04:46 PM.

Certified Tire Service Instructor since 2009
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