How Big?

k-bo

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May 21, 2020
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Georgetown, TX, USA
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31's might be pretty tight. Recommend having a look at tiresize.com and look at the range of sizes within a diameter (like around 31") and tires within a specific size. Not all tires are the same.
 
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T. A. Rustad

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Advocate I

May 22, 2020
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Oklahoma City, OK, USA
What is the biggest tire I can run on an uncut 1974 Bronco with no lift?
I fit 31x10.50r15 on factory wheels, uncut, no lift, but it does rub on the frame on the front when making really tight turns.
 
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Jimbo

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Advocate II

Jul 8, 2020
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Arnold, CA, USA
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James
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Sangster
I also run 31s: 31 10.5" 15 on the stock steel rims. I used this on the stock height with uncut rear quarters. The tires went 1"+ into the wheelwell covered by the quarter, and just barely had room in there. Later I added a 2.5" lift and now the 31s have about 1" of space between the top of the tire and the quarter.
 
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LoneRanger

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May 20, 2020
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I also run 31s: 31 10.5" 15 on the stock steel rims. I used this on the stock height with uncut rear quarters. The tires went 1"+ into the wheelwell covered by the quarter, and just barely had room in there. Later I added a 2.5" lift and now the 31s have about 1" of space between the top of the tire and the quarter.
this!!!
a 31 is too much tire on a truly stock truck imo!

L.R.
 

Jimbo

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Advocate II

Jul 8, 2020
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Arnold, CA, USA
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James
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I would agree overall, but I knew I was going to give it a 2.5" lift and did not want to buy two sets of tires. So, a bit big for stock, yes...but it does work (would you call it a Sasquatch Edition? ha, ha). Perfect for 2.5" lift.
 
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TrojanHorse

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Jun 27, 2020
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George
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31 x 10.5 BFG tires no sweat on my uncut non lifted Bronc. I’ve seen 33s but they had a 1-1/2” body lift.