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12-06-2021, 12:36 PM | #1 |
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Join Date: Dec 2010
Location: NC
Posts: 666
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Ridetech Arms, Dropped Spindles, and 15" Wheels
I know that factory lower control arms interfere with 15" wheels when running a drop spindle. Does anyone know if running Ridetech tubular lower control arms will give enough clearance for 15s with a 2.5" drop spindle?
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12-06-2021, 02:17 PM | #2 |
Post Whore
Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,351
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Re: Ridetech Arms, Dropped Spindles, and 15" Wheels
Unfortunately it's not that simple of a question. Wheel offset also plays a part in whether your combination will work. You can have interference between the wheel and the tie rod.
I replaced my factory lower control arms with reproduction ones and I had to grind them so the brake rotors didn't rub. So mixing aftermarket parts causes more problems. What brand spindles? Some of the cheaper ones are not always the drop they are advertised to be. Found that out on a Firebird some years ago. One side was 2 inches and the other side was 1 5/8" needless to say it took us a bunch of messing around to figure out why the car didn't sit level. Manufacturing inconsistencies will mean that what worked on my truck may not work on your truck. What does RideTech say? Can you post the wheel sizes and who's spindles you have?
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12-06-2021, 02:24 PM | #3 |
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Join Date: Nov 2003
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Re: Ridetech Arms, Dropped Spindles, and 15" Wheels
Also, I wouldn't say it's a dire situation either. A little time with a grinder will fix the issue. I'm running 2.5" spindles from McGaughy's with 15" rallies and that's all I had to do for my factory arms. Unless you're putting together a concourse truck, likely no one will notice.
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12-06-2021, 04:09 PM | #4 |
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Location: NC
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Re: Ridetech Arms, Dropped Spindles, and 15" Wheels
275/60R15 with 0 offset on 15x8.5 is what I always thought, but measurements look more like 15x10 (still on truck at the moment)
Looking to buy Ridetech coilover kits with upper and lower tubular arms and CPP spindles. |
12-07-2021, 03:19 PM | #5 |
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Join Date: Mar 2002
Location: Pittsburg Ca
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Re: Ridetech Arms, Dropped Spindles, and 15" Wheels
I had ECE 2 1/2 spindles with 15x8 rallies up front. The only problem I had was caliper clearance. Then I found some 15x8 with 4 1/2 backspace, they also mentioned they were for disc brakes. They worked perfect. Trying to remember where I bought them, it was on line
Any way I went with QA1 coil overs. Long story short I went with 20s for better clearance
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12-07-2021, 05:06 PM | #6 | |
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Re: Ridetech Arms, Dropped Spindles, and 15" Wheels
Quote:
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12-08-2021, 02:45 PM | #7 |
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Join Date: Dec 2003
Location: Pampa, Texas
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Re: Ridetech Arms, Dropped Spindles, and 15" Wheels
i'm running drop spindles factory arms and have had zero interference.
Wheel vintiques 62 series. 8" front 10" rear.
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12-08-2021, 02:49 PM | #8 | |
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Re: Ridetech Arms, Dropped Spindles, and 15" Wheels
Quote:
Beyond that, backspacing of the front wheels is probably the No.1 issue for contact related problems. Your stated 15x8.5" w/) offset is roughly 4.75"BS which is crowding the a-arm @ only 15" OD & I would bet comes close or contacts the outer tie-rod end. Larger OD wheels can pull that width/offset off because things will fit within the barrel better. Tubular arms can yield more clearance near the BJ pocket depending on how it's made (shaped). Better quality arms are usually clearanced by the manufacturer.
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12-08-2021, 02:53 PM | #9 |
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Join Date: Apr 2001
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Re: Ridetech Arms, Dropped Spindles, and 15" Wheels
If you need to do things in stages, try starting w/8" or 7" front wheels that will require less back-space to fit under the wheel arch.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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