Spare Tire

[Nehal51086]

Welcome Nehal. Let us know it this works. I may get an OEM rim and keep it in the bed. I have a truck cap so there is room.

Sorry for the late response, I loose track of all the dif ram forums .lol...

But yes I went ahead with this plan and it worked.

Obviously since this tire is wider than the original spare it sits a bit lower, but I wasnt too concerned, considering my lift. (Don't off road)

 

[TRIBUTE100]

I just put 4 - 275/55/20 Cooper Discoverer A/T 3 XLT Load Range E tires on my 2021 Big Horn because I tow a 7500# GVWR TT. With no load I running them with 50 psi and will pump them up to ~65 psi when I tow. They're stiffer than the OEM's but ride smooth and almost as quiet as the OEM Bridgestone Duelers. I've decided to replace the emergency spare with a Load Range E rated tire. My spare rim is an 8 X 18, so I needed to find an 18" tire with the same diameter. It turns out to be a 275/65R18 which has only a 0.63% larger diameter than the 275/55/20's. I've found a Corsa A/T 275/65R18 Load Range E tire at Discount Tire with a good rating for a cost of $211.53 which includes mounting. balancing, and all the taxes. I didn't want to buy an extra 20 inch rim and the 20 inch tire is quite a bit more expensive. This tire may never hit the ground, but it will give me peace of mind knowing it's there if needed.

 

[Rankinroudy]

can I use 20 in. spare when my ram 1500 has factory 22's on it?

 

[HSKR R/T]

can I use 20 in. spare when my ram 1500 has factory 22's on it?

Vehicle doesn't care what your wheel size is. As long as the diameter of the tire is the same as what's on your 22s is all that matters.

 

[MurphBigHorn]

Added a full size spare. Tire measure 34.69 iirc. It a tight fit

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[skyhawk42]

Added a full size spare. Tire measure 34.69 iirc. It a tight fit

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Does it hit the track bar? I tried to put my 35x12.50 bfg at ko2 under there and it went up but rubbed the track bar and was squeaking just by rocking the truck a little. I would love to get the spare out of the bed and back underneath

 

[Darksteel165]

Does it hit the track bar? I tried to put my 35x12.50 bfg at ko2 under there and it went up but rubbed the track bar and was squeaking just by rocking the truck a little. I would love to get the spare out of the bed and back underneath

If it was squeaking by rocking the truck you didn't make it right enough when you raised it up.

 

[skyhawk42]

If it was squeaking by rocking the truck you didn't make it right enough when you raised it up.

It was as tight to the hitch as I could make it go, but where the tire rubbed the track bar was where the sleek came from. I couldn’t crank it up any more. I tried moving the tire more left and right and just couldn’t get it to clear

 

[MurphBigHorn]

Does it hit the track bar? I tried to put my 35x12.50 bfg at ko2 under there and it went up but rubbed the track bar and was squeaking just by rocking the truck a little. I would love to get the spare out of the bed and back underneath

Clears the track bar. I left the heat shields on to. So once it up. It’s pretty much stuck up. I grinded an 1/8inch off the back of hitch. Just The extra metal that stuck out.


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[RustyShackelford]

Glad to hear the 270/70-18 will fit underneath. I was a little ticked when I crawled under to see the spare was smaller so I’ll be replacing it with a full size.

 

[johnnyf123]

2025 Big Horn SST 20 inch full size spare Bridgestone Dueler H/L Alenza. Hangs a little lower than the temporary spare but otherwise fits fine.

 

[Jako]

2025 Big Horn SST 20 inch full size spare Bridgestone Dueler H/L Alenza. Hangs a little lower than the temporary spare but otherwise fits fine.

Did my 3000 mile trip to Florida and back with a full size duplicate "wheel" and tire but locally I use the OEM spare. Living in the NY/NJ metro area I don't need to travel so far for my needs. I can deal with the 50 MPH restriction on the spare on local terrain but I95 and the supposed "70" speed limit, No Thank You, hazard to me and everyone around me.

Vernacular to ponder. What do the pros call "them"? How do you refer to "them".

Rims vs Wheels vs Tires: Difference Between Tires Wheels & Rims - Tire Agent

Rims vs Wheels, What is the Difference? Do you know the difference between a pot and a pan? The question has led to heated dinner-table deba

www.tireagent.com

 

[HSKR R/T]

Did my 3000 mile trip to Florida and back with a full size duplicate "wheel" and tire but locally I use the OEM spare. Living in the NY/NJ metro area I don't need to travel so far for my needs. I can deal with the 50 MPH restriction on the spare on local terrain but I95 and the supposed "70" speed limit, No Thank You, hazard to me and everyone around me.

Vernacular to ponder. What do the pros call "them"? How do you refer to "them".

Rims vs Wheels vs Tires: Difference Between Tires Wheels & Rims - Tire Agent

Rims vs Wheels, What is the Difference? Do you know the difference between a pot and a pan? The question has led to heated dinner-table deba

www.tireagent.com

Rim it just the outside part of the wheel, or what you shoot a basketball through. The wheel is the whole thing.

 

[Jako]

Gave the spare a fresh coat after a thorough prep and primer. The trim paint from my local auto paint store goes on extremely well.

 

[RAM REAPER MAN]

Reading this makes me want to get a spare that matches the TRX wheels I got. Am I correct in saying all trucks with the off road package came with full sized tires? I'm planning a snow trip this fall and I would have never thought about the spare tire situation. In my head I was thinking it came with a full sized spare so I'm good.

 

[HSKR R/T]

Reading this makes me want to get a spare that matches the TRX wheels I got. Am I correct in saying all trucks with the off road package came with full sized tires? I'm planning a snow trip this fall and I would have never thought about the spare tire situation. In my head I was thinking it came with a full sized spare so I'm good.

Yes, off road package comes with "full size" spare. It's on an 18" wheel, but is a real tire, not a temporary use one.

 

[Jako]

Cross Reference

W

Post in thread 'Swap out steel wheel/temp spare for full size normal wheel and tire?'

Mar 22, 2025

Perfect reason why this forum exists...
OP asks a reasonable question and gets several good answers and with pics as well.
Age of the thread doesn't change its usefulness.

• Willwork4truck

• 

 

[Jako]

Cross Reference

Post in thread 'Check your spare tire lately?'

Mar 14, 2025

Found this thread ... thanks ... now I have some questions. I have a 2020 Limited 1500 ecodiesel and my spare is the OEM spare that came with the truck. But it is an 18 in wheel and my stock wheels are 20 in. Am I asking for trouble if I ever need to use this spare? I would hope it is only a short travel distance to a tire shop but you never really know. I was thinking about getting a 20 in wheel and mount my Michelin Defender LTX's 275 / 55 R20 so my spare would be the same as my running tires. Anyone know of concerns or issues I should be aware of before I spend the money...

• mikeru82

• 

 

[RAM REAPER MAN]

My truck came with 20 inch wheels from RAM. Does that mean I have an 18 inch wheel spare? I guess I could go look...

 

[Jako]

My truck came with 20 inch wheels from RAM. Does that mean I have an 18 inch wheel spare? I guess I could go look...

LOL, don't have an answer as I have 18 and 18, but I like your question and answer.