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Need help deciding on tire size

chriskent85

Jr. Member
Joined
Aug 17, 2016
Messages
293
69 with 3.5" duff extended radius arm lift with 2" body lift. Putting bronco designs body with their fiberglass fender flairs. Gonna use for everyday driving. Do you guys recommend 35" or 37" tires. Just don't want to have to trim anything after I'm done. Only reason I ask you guys is I don't have the body here yet but I need to go ahead and get the rims and tires for it.
 

tasker

Contributor
all knowing of nothing
Joined
Jun 2, 2006
Messages
21,133
Loc.
NH
36X14.50X15 ON 8.5'S....glass tub as well, just to give you an idea...5.5 long arm and w/h 1" integrated body mounts
 

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DirtDonk

Contributor
Bronco Guru
Joined
Nov 3, 2003
Messages
49,425
Daily driving on the street? What transmission?
Even though 37's might fit, I'd stick to 35's personally. Unless you just don't like the extra room under the fenders (it's not that much) the smaller tire is just more street friendly.

But one thing is for sure. Make your tire decision without any doubts, so you can choose your gear ratios based on what transmission and tire size and engine tune you'll be running.
Reason I make such a big deal out of that is that there is a noticeable difference in power between the two tire sizes, even though the diameter change on paper is just 2 inches. Even that 1" radius change (or more, depending on tire brands compared) comes with extra weight as well as the size change.

Paul
 

Crush

Contributor
Bronco Guru
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May 30, 2007
Messages
3,463
Loc.
Greenbottom, WV
I have 15 x 36 x 15.5 on 8" rims. 3.5" suspension and 1" body. Only place it rubbs is the passender side radius arm at full lock
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Im thinkjng you could go the 37's because they only come in 13.50 width and not have to cut. You have a 2" body lift. Thats one more than me but that equals 2" in tire height. Bigger is better. ;)

Hey tasker. What tires are those?
 

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tasker

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all knowing of nothing
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Jun 2, 2006
Messages
21,133
Loc.
NH
I should of also added, I plan on running 35's. The truck has a 351 EFI, 4R40W, 4.56's. put these Gateway Gumbo radials on to get me some motivation to get his truck done!!
 
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chriskent85

Jr. Member
Joined
Aug 17, 2016
Messages
293
I have AOD trans and gonna run toms bronco disc brake conversion front and rear.
 

Broncobowsher

Total hack
Joined
Jun 4, 2002
Messages
35,701
35s will be much nicer on brakes, ball joints, and wheel bearings. That stuff isn't that big of a deal on a weekend toy as the mileages stays low and it is often apart for upgrades. But on a daily driver you don't want to be wrenching on it just to get to work the next day. That takes the fun out of it.
 
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chriskent85

Jr. Member
Joined
Aug 17, 2016
Messages
293
Well I have a 2011 Ford raptor that I bought brand new back in 2011 and only have 40k miles on it. I only live 4 miles from my shop. So putting miles on it isn't an issue for me. I just want to make sure I'm not rubbing or have to cut more. I love the 37"s that I have on my raptor now. Just not sure about going down to 35's. I hate open fender space.
 

tasker

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Jun 2, 2006
Messages
21,133
Loc.
NH
anybody local that you could bolt one up and see?
 

norm02

Full Member
Joined
Feb 8, 2016
Messages
336
35s will be much nicer on brakes, ball joints, and wheel bearings. That stuff isn't that big of a deal on a weekend toy as the mileages stays low and it is often apart for upgrades. But on a daily driver you don't want to be wrenching on it just to get to work the next day. That takes the fun out of it.

Agree 100%
 

jmangi62

Bronco Guru
Joined
Jul 28, 2013
Messages
2,476
5.5in SL & 1in WH BL 35x12.50x17 Toyo's on 17x9 wheels w/1.5in wheel spacers 3.5in backspacing. :cool:
 

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Joined
Mar 21, 2017
Messages
1
Loc.
San Antonio
I am running 37's on mine with only a 3 !/2" suspension I had issues with the rear wheel well when flexing I had to cut about 2" on both sides and bent the inner fender out with a hammer, I also had to expand the front inner fender it would rub when I turne, now the only rubbing issues I have are on the radius arms. I am running 15 x 10 steel wheels and a 37"x 12.5 maxxis creepy crawler Its a great tire offroad but running it on teh street puts alot of wear on it. I will eventually replace the inner fenders with some cutom made ones, I have a bunch of pics on instagram @discoveroffroad and jesse @thebroncoconnection has the blue and white bronco with the white prerunner bumper, he is running a 3 1/2 with 2" body and 37's and has the same issues with it rubbing on teh radius arms at full lock
 

onebadd73

Full Member
Joined
Sep 22, 2003
Messages
376
Loc.
Moreno Valley, Ca.
First picture 3 1/2 lift with 35's. second picture 5 1/2 lift with a 2" body lift on 37's.
 

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