What size tire do you hope to run?

What size tire?


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Tslater1989

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I'm running 37x13.5r17 E rated they look ok. I really prefer the 39x15.5r15 on my Bronco though, now that is some seriously good looking amount of sidewall.
Personally, I think you can't beat the look of 15's with 44" super swamper tsl's.
 

JimmyDean

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Personally, I think you can't beat the look of 15's with 44" super swamper tsl's.
I agree, but I'll need to upgrade to 1 ton axles, and since the intent would be to use 1 tons from a 2005+, I'll need a minimm of 17" rim to clear the calipers. but even then, 44 boggers on 17s should look good.
 

Tslater1989

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I agree, but I'll need to upgrade to 1 ton axles, and since the intent would be to use 1 tons from a 2005+, I'll need a minimm of 17" rim to clear the calipers. but even then, 44 boggers on 17s should look good.
Yep. Much better design on the 05+ super duties. I'd still truss it though.
 

JimmyDean

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Yep. Much better design on the 05+ super duties. I'd still truss it though.
will keep that in mind. at this point, im hoping someone T-bones my 06 250 so I can drop teh axles into the bronco and the diesel into the 02 f-150.
 

frinesi2

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I picked 33" because I'm assuming those will be an OEM option, with 31-32 being a base level size. 33" with decent ground clearance would take it to places my ZJ and mitsu would never be able to get to as they stand now.
 

Fosters

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I usually run separate tires on the street vs offroad - much cheaper and better to have good tires for each purpose... also helps I have tire machines and a lift at home. on the XJ it's 32s on the street and 33s offroad right now, going to move to 33/35 if the bronco does end up having an IFS and I'm stuck with my XJ. On my old rubicon I ran 35s on the street/37 trail, though finding a quiet, street thread 35 was a pain in the ass.
 

rkj__

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I usually run separate tires on the street vs offroad - much cheaper and better to have good tires for each purpose... also helps I have tire machines and a lift at home. on the XJ it's 32s on the street and 33s offroad right now, going to move to 33/35 if the bronco does end up having an IFS and I'm stuck with my XJ. On my old rubicon I ran 35s on the street/37 trail, though finding a quiet, street thread 35 was a pain in the ass.
That makes some good sense for some usage scenarios.

Even without a lift and tire machine, swaps are super easy if you have the offroad tires on their own second set of wheels. All you need is a jack, and ideally an impact gun.
 

ChrispyKC

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33’s should be easily upgradable to 35’s. Not that I’m indicating that 33’s will be stock, because I’m not, but if they were available on a particular trim level I would be upgrading them.
 

Fosters

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33’s should be easily upgradable to 35’s. Not that I’m indicating that 33’s will be stock, because I’m not, but if they were available on a particular trim level I would be upgrading them.
I like the built in disclaimer... lol :D
 

Dub347sbf

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Rubicon has 285/70/17 which is almost 33 inches. Is that what we guess a top of the line bronco will run? The Sahara runs about a 31 inch tire, 255/70/17.

Screenshot_20191224-022017_Chrome.jpg
 

BONESTOCK

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The only problem with 17" wheels is that there are only a few tires that seem to be made in a load range C when you get to the larger sizes. Most seem to be at least D. And they are not cheap, even thought that seems to now be the most popular off-road wheel size. 15s are nice but you have to have larger brakes to stop a heavier tire/wheel and rig.
You don't have to have larger brakes. Especially if you're not racing it. The larger brakes are for heat management. I can't imagine heat being an issue in a vehicle like the Bronco versus something like a Mustang at the race track.
 

ChrispyKC

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This is the truth right here. The stock brakes on the 1st gen Explorer axles (disc front drum rear and fit inside 15" wheels) I have under one of my Bronco IIs can lock up my 37" tires no problem. Now, if I were to try and perform repeated high speed panic stops or try and stop a big heavy trailer I would probably have fade and warpage issues, but that would not be normal operation for me and most other future Bronco owners.

The brakes on JKs were small enough that some 15" wheel styles would fit and they don't seem to have issues stopping with 37s and ton of added on weight. I would be interested whether 15s fit a JL, but it is fast becoming a moot point since the popularity of 15s is waning and 17s are now the most popular wheel size for good tire selection. I still remember the days when guys were grinding down their brake calipers to fit 15" wheels on one ton axles. Crazy how things change. I think a lot of it has to do with Jeep, half ton trucks, and mini trucks running primarily 17"+ wheels for the last 10-15 years.
Wranglers are pretty light weight though. I the combination of light weight is offset by the rotational mass so the brakes might be at the peak of their capability.
 








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