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Do BDS Radius Arms offer extra clearance?

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Old Jul 7, 2024 | 12:59 AM
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Do BDS Radius Arms offer extra clearance?

I just got a 19 F350. It has stock radius arms, has a 2.5” puck/spacer level kit, and 37x12.5r18 on +18 offset Methods 705. It currently runs the stock radius arms.

My question is if the 2.5” BDS radius arms provide any additional clearance to prevent/reduce rubbing? I know the Carli RA’s provide a specific cutout… just haven’t heard specifically if BDS offers any improved clearance.

thanks!!


 
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Old Jul 7, 2024 | 05:01 AM
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Yes, I run them and get no rub with 37" tires. I get a slight, and I mean slight rub on the front sway bar but I'm replacing that with a hellwig.
 
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Old Jul 7, 2024 | 11:00 AM
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Originally Posted by adr3naline
I just got a 19 F350. It has stock radius arms, has a 2.5” puck/spacer level kit, and 37x12.5r18 on +18 offset Methods 705. It currently runs the stock radius arms.

My question is if the 2.5” BDS radius arms provide any additional clearance to prevent/reduce rubbing? I know the Carli RA’s provide a specific cutout… just haven’t heard specifically if BDS offers any improved clearance.

thanks!!

don’t know if this will help but here’s a couple pictures of mine with 38 x 13.5 tires.




 
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Old Jul 7, 2024 | 11:36 AM
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This is great! Thank you. Do you know your wheel offset? And you have no rubbing on the radius arms that I can tell, right?
 
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Old Jul 7, 2024 | 12:25 PM
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Originally Posted by adr3naline
This is great! Thank you. Do you know your wheel offset? And you have no rubbing on the radius arms that I can tell, right?
wheels have 4.5 backspacing and
-18 offset on 20 inch rims.

4” bds radius arm lift gas engine.

Had a little rubbing on bumper corner that I trimmed. No rubbing on radius arms.






 
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Old Jul 7, 2024 | 03:49 PM
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Originally Posted by Zixxer
Yes, I run them and get no rub with 37" tires. I get a slight, and I mean slight rub on the front sway bar but I'm replacing that with a hellwig.
There was another thread recently where one pist said that he had rub on the BDS radius arms with 37's on stock wheels. I was surprised to read that at the time, but now I'm confused on what the real deal is. I wonder if his were a wider tire, like 37x 13.5.
 
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Old Jul 7, 2024 | 03:52 PM
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Originally Posted by adr3naline
I just got a 19 F350. It has stock radius arms, has a 2.5” puck/spacer level kit, and 37x12.5r18 on +18 offset Methods 705. It currently runs the stock radius arms.

My question is if the 2.5” BDS radius arms provide any additional clearance to prevent/reduce rubbing? I know the Carli RA’s provide a specific cutout… just haven’t heard specifically if BDS offers any improved clearance.

thanks!!
Do you have much rub with your current setup? 37x12.5 on +18 offset wheels (depending on width) shouldn't have much radius arm rub. A 9" wide, +18 offset wheel gives you around 3/8" more clearance off the arms compared to stock wheels., so you shouldn't need much more clearance to avoid rub. I can't imagine the BDS arms not giving enough additional clearance with that wheel and tire setup to completely eliminate the rub.

 
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Old Jul 7, 2024 | 03:54 PM
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Originally Posted by 4wd6.7L
There was another thread recently where one pist said that he had rub on the BDS radius arms with 37's on stock wheels. I was surprised to read that at the time, but now I'm confused on what the real deal is. I wonder if his were a wider tire, like 37x 13.5.
I don’t think the stock rims have the required backspacing that aftermarket rim can have you need about 4 1/2 inches backspacing.
 
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Old Jul 7, 2024 | 03:59 PM
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Originally Posted by Mainebucks
I don’t think the stock rims have the required backspacing that aftermarket rim can have you need about 4 1/2 inches backspacing.
Except for the fact that 37's can be run on stock wheels with other aftermarket arms and have zero radius arm rub. That's why I was surprised that it wasn't the case, at least in one person's experience, with BDS radius arms.
 
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Old Jul 7, 2024 | 04:34 PM
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Originally Posted by 4wd6.7L
Except for the fact that 37's can be run on stock wheels with other aftermarket arms and have zero radius arm rub. That's why I was surprised that it wasn't the case, at least in one person's experience, with BDS radius arms.
yeah I was running (on my ‘21 f250) the stock 20x8 +40mm wheels with just a set of Kumho AT52’s in 37x12.50

i rubbed pretty good on stock radius arms and a 2” level

then with these same wheels/tires I put on a bds 4” radius arm lift kit and they still rubbed

less than the stock arms, but still rubbed nonetheless…..and aside from the fact I could feel it in the steering wheel when it occurred I also received the missing paint on the radius arm from the rubbing which made me more sad because I knew they had more clearance than stock and I was hoping it would work out


in the end it took getting a wheel with less backspacing to stop the rubbing on that truck
 
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Old Jul 7, 2024 | 04:39 PM
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Originally Posted by Rwhjr
in the end it took getting a wheel with less backspacing to stop the rubbing on that truck
Do you think with the OP's wheel/tire setup the BDS arms would eliminate rub?
 
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Old Jul 7, 2024 | 04:50 PM
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Found an old pic that show the smudged off paint. Not the clearest but it was from the short time I drove with bds arms and 37x12.50s on stock wheels

I didn’t like it rubbing so different offset wheels it was in the end even though I liked the stock wheels the truck had


 
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Old Jul 7, 2024 | 04:51 PM
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Originally Posted by 4wd6.7L
Do you think with the OP's wheel/tire setup the BDS arms would eliminate rub?
I would’ve thought +18mm would clear stock arms but I’m not an expert

id have to say they should definitely clear bds arms though
 
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Old Jul 7, 2024 | 05:56 PM
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Originally Posted by 4wd6.7L;[url=tel:21276694
21276694[/url]]Do you have much rub with your current setup? 37x12.5 on +18 offset wheels (depending on width) shouldn't have much radius arm rub. A 9" wide, +18 offset wheel gives you around 3/8" more clearance off the arms compared to stock wheels., so you shouldn't need much more clearance to avoid rub. I can't imagine the BDS arms not giving enough additional clearance with that wheel and tire setup to completely eliminate the rub.
I currently do have rubbing, on my passenger radius arm only. So I need to address the off center axle before I can say for sure, but it rubs hard on that passenger side. None on the driver side.
 
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Old Jul 7, 2024 | 08:21 PM
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from the looks of those arms, they do not appear to give any more clearance
 
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