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Tire size question

Banshee1956
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Banshee1956 New Member

Banshee1956

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I have a 2022 refresh Silverado 5.3 4wd. My stock tire size that came on the truck is 275/60/20. What I would like to do is upgrade to 275/65/20. It is approximately a little over an inch taller than my stock tires. Would I be able to do this without lifting the front 

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medic_84 Enthusiast

medic_84

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No…… I own a 2022 Sierra and installed the AT4 suspension on mine which is 2” taller than stock…. For you Chevy guys equivalent to a trail boss… I put 275/65/20s on and have roughly same clearance as stock. 

Roxbury5 New Member

Roxbury5

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On 1/19/2024 at 5:06 PM, medic_84 said:

No…… I own a 2022 Sierra and installed the AT4 suspension on mine which is 2” taller than stock…. For you Chevy guys equivalent to a trail boss… I put 275/65/20s on and have roughly same clearance as stock. 

I have a 2020 Sierra 1500 Elevation that I'm having a 1.5" leveling kit installed and I was thinking of going with 275/65R20's on the stock wheels and was wondering about clearance. Sounds similar to your set up.

Transient Senior Enthusiast

Transient

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On 1/19/2024 at 6:50 AM, Banshee1956 said:

I have a 2022 refresh Silverado 5.3 4wd. My stock tire size that came on the truck is 275/60/20. What I would like to do is upgrade to 275/65/20. It is approximately a little over an inch taller than my stock tires. Would I be able to do this without lifting the front 

Possibly.  It might depend on your trim.  Trail Boss I definitely know it'll fit as I'm running 285/75r18 on a stock Trail Boss suspension (mathematically that's 34.8", but Goodyear says the Duratracs in that size are 35.1").  If you're not a Trail Boss I cannot say for certain either way.  The tire size you're looking at is marginally narrower and smaller than mine.  You might be able to make it work.  I think you'll clear the upper control arm, but might rub a little on the mud flaps and wheel well liner while at full lock.

TrueBlue Enthusiast

TrueBlue

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Posted (edited)
On 1/19/2024 at 4:50 AM, Banshee1956 said:

I have a 2022 refresh Silverado 5.3 4wd. My stock tire size that came on the truck is 275/60/20. What I would like to do is upgrade to 275/65/20. It is approximately a little over an inch taller than my stock tires. Would I be able to do this without lifting the front 

I'd say yes. My blue '23 came with 17" 255/70 wheels and tires. I traded in another '23 that came with 20" 275/60 wheels and tires. As part of the deal I had them swap the wheels and tires on the trucks so I could keep the wider and taller setup. They did so, in about an hour at the dealership, and later told me there was not even a flash for the different packages that would correct the odo/speedo. So, essentially I went with a 3" larger diameter wheel and no changes to the truck's wheel well area, or anything else were required.

Edited by TrueBlue
medic_84 Enthusiast

medic_84

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Posted (edited)

I don’t think that a 1.5” lift/level will do it…..  some one else may chime in as I cannot speak specifically to this but it’s tight with the 2”

   On 1/19/2024 at 4:06 PM,  medic_84 said: 

No…… I own a 2022 Sierra and installed the AT4 suspension on mine which is 2” taller than stock…. For you Chevy guys equivalent to a trail boss… I put 275/65/20s on and have roughly same clearance as stock. 

I have a 2020 Sierra 1500 Elevation that I'm having a 1.5"leveling kit installed and I was thinking of going with 275/65R20's on the stock wheels and was wondering about clearance. Sounds similar to your set up.

Edited by medic_84
medic_84 Enthusiast

medic_84

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On 2/2/2024 at 9:33 AM, TrueBlue said:

I'd say yes. My blue '23 came with 17" 255/70 wheels and tires. I traded in another '23 that came with 20" 275/60 wheels and tires. As part of the deal I had them swap the wheels and tires on the trucks so I could keep the wider and taller setup. They did so, in about an hour at the dealership, and later told me there was not even a flash for the different packages that would correct the odo/speedo. So, essentially I went with a 3" larger diameter wheel and no changes to the truck's wheel well area, or anything else were required.

The wheel size has nothing to do with it it is the overall diameter of the tire and wheel set up. You could go from a 17” with a swamper to a 26” with a rubber band around it and theoretically have the same over all diameter combination. 

medic_84 Enthusiast

medic_84

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Just now, medic_84 said:

The wheel size has nothing to do with it it is the overall diameter of the tire and wheel set up. You could go from a 17” with a swamper to a 26” with a rubber band around it and theoretically have the same over all diameter combination. 

Also the 275/60R20 is a stock tire/ wheel combo as is the 255/70/17 so both are stock configurations. This is why they are interchangeable. I am not saying the 275/60 is not slightly larger than the 255/70 because I believe it is about 2” taller what I am saying is he is asking about a larger tire than stock. My truck had 275/60 on it stock and very little “extra” room. I put the AT4 suspension on my truck which is a 2” over normal lift and 1/2” wheel spacers with longer wheel studs, I had to trim the front mud flap and zip tie the inner fender liner to get 275/65 to fit with my  stock 20” slt wheels

medic_84 Enthusiast

medic_84

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Posted (edited)

I have attached photos for reference…… should any one be interested……

I used hub and wheel centric billet spacers 1/2” spacers……. Wheel studs are from an early 2000s super duty….. yes they fit. Front replacements are Dorman 610-530 M14-1.50 Serrated Wheel Stud - 15.90mm Knurl, 78mm Length, Rear replacements are Dorman 610-490 M14-1.5 Serrated Wheel Stud - 15.7mm Knurl, 69.75mm Length. These front and rear replacement wheel studs are just under 5/8” longer than stock studs. This allows you to have the same thread engagement with the lug nuts as stock. The AT4 and Trail boss suspension parts can be found pretty plentiful on eBay as new take offs from 4x4 shops. You will also need the upper control arm as well as they are different on the AT4 and Trailboss. Here is the write up I used for trimming. 
https://wheelsasap.com/gmc-at4-oversized-tire-trimming-guide/

 

My tires are 275/65R20 Nitto Recon Grappler. Overall diameter is 34.09” and Overall width is 10.98”.

 

If you have any further questions please ask.

Edited by medic_84

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