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Old 06-28-2011, 09:45 AM   #1
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pfadt coilovers and 20x10 forgelines -- wheel rub on the coilover

I'm running 20x10 forgelines on all four corners with pfadt coilovers. Im running 275/40/20's up front and the tire is just barely rubbing on the coilover. Custom spun 5mm spacers from Forgeline too and they're still not clearing.

I'm not comfortable running even a 5mm spacer up front.... and a 6-7 mm spacer just wont give enough stud for the lug nut.

The wheel should clear the coilover without a spacer running the right offset, right?

Are the offsets wrong? I've got a call into forgeline and am awaiting a response, but wanted to see if anyone running pfadt coilovers and forgelines with custom offset have had this issue... I gave my pfadt coilover setup to forgeline for the right offset but it looks like the clearance for the tire just isn't enough.

Can anyone with Pfadt coilover experience or forgelines chime in with proper clearance for the front coilovers?
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Old 06-28-2011, 02:01 PM   #2
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Pretty common with an aggressive front wheel fitment, and aftermarket coil-overs. KW and Pfadt have a little less clearance that stock struts, Pedders and BCR have slightly more clearance than stock. You might consider sending the front wheels back to Forgeline to get them to re-hoop them into 9.0 or 9.5 widths, depending on the offset you have milled into the lug pad already. 9.5 would be perfect for that tire size, but it will need to be a perfect offset in order to clear the shock spring perch and not stick out of the fender.

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Old 06-28-2011, 03:32 PM   #3
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Forgeline has been so helpful. What an awesome company!

The offset is perfect for pedders coilovers or lowering springs with the stock struts but the Pfadt coilovers are bigger than stock at the spring perch... Dave is turining some custom billet 7 mm spacers to clear the coilover spring perch and is mailing them out this week. Gotta love a fellow camaro owner!

Now I'm concerned about fender clearance and the fronts sticking out beyond the fender...

If these custom spacers dont work, Ill have to send 2 wheels back and get a 9.5 hoop- I wonder if the 1/2 inch will be enough to clear the spring perch??

Am I going to have bearing issues or chatter up front with 7mm spacers?
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Old 06-28-2011, 03:40 PM   #4
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Shoot Erik@Torq a PM, he had the same issue with his forgelines and pfadt coilivers.

I believe Pfadt offers a smaller/shorter spring for the front coilovers which ended up taking care of the problem.
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Old 06-28-2011, 04:05 PM   #5
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sent E a PM... Curious to know what offset he's running on his GA3R's
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Old 06-28-2011, 04:07 PM   #6
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I believe Pfadt offers a smaller/shorter spring for the front coilovers which ended up taking care of the problem.

Did a search and came up null.... Any threads out there on this or can Pfadt chime in?
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Old 06-29-2011, 08:52 AM   #7
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I'd recommend giving Pfadt a call, they are very good and always glad to help when it comes to their products. A shorter length coil spring would definitely solve the issue, as it would move that lower spring perch nut higher and out of the way.

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Old 06-29-2011, 03:33 PM   #8
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UPDATE:

Offset is at +36 on the front 20x10's and with a 5mm spacer the tire is barely touching the spring perch.

Camber is at -.90 right now which is falls into "aggressive street" tolerances. I wonder if I took camber to -.70 if that small amount give me about 2-3mm clearance at the spring perch? I dont see this affecting performance too much...

What would be the minimum tolerance allowed b/t the tire and the spring perch? 2mm? 1mm?
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Old 06-29-2011, 03:52 PM   #9
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1/8" is a general rule for clearance minimum.
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Old 06-29-2011, 04:05 PM   #10
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Just got off the phone with Erik @ Torq. What an awesome guy!

Erik went through the exact same issue as he's running forgeline GA3R's and pfadt C/O's. He & Aaron worked together to develop a proper weight spring with a 2 inch shorter length that brings the perch above the tire to solve the problem. This solves the clearance issue b/t the tire and the spring perch and maintains adjustability on the coilovers.

Thanks everyone for the help and feedback! This forum and its members are incredible!!
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Old 06-30-2011, 02:34 PM   #11
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Quote:
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Just got off the phone with Erik @ Torq. What an awesome guy!

Erik went through the exact same issue as he's running forgeline GA3R's and pfadt C/O's. He & Aaron worked together to develop a proper weight spring with a 2 inch shorter length that brings the perch above the tire to solve the problem. This solves the clearance issue b/t the tire and the spring perch and maintains adjustability on the coilovers.

Thanks everyone for the help and feedback! This forum and its members are incredible!!
Glad I could help
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Old 07-01-2011, 09:24 AM   #12
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For those with pfadt coilovers wanting to go with a wider wheel and 275-285 up front, you need these shorter 8 inch springs from Torq... This will raise the spring perch above the tire and still allow for full adjustability.

Thanks to all for advice and assistance.

http://www.gettorq.com/store/chevrolet-camaro/replacement-springs-for-pfadt-camaro-coil-overs-8-2010-camaro-ss-v6.html
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Old 07-07-2011, 04:36 PM   #13
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This is an awesome thread. Thanks for directing me to it.
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Old 07-07-2011, 05:10 PM   #14
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Quote:
Originally Posted by full of days View Post
For those with pfadt coilovers wanting to go with a wider wheel and 275-285 up front, you need these shorter 8 inch springs from Torq... This will raise the spring perch above the tire and still allow for full adjustability.

Thanks to all for advice and assistance.

http://www.gettorq.com/store/chevrolet-camaro/replacement-springs-for-pfadt-camaro-coil-overs-8-2010-camaro-ss-v6.html

Excellent Information....Many Thanks!!!
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Old 07-08-2011, 08:17 AM   #15
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This is an awesome thread. Thanks for directing me to it.
Any time amigo -- Hopefully the knowledge gleamed from these setups will help people in the future wanting to go with bigger wheel and tire in the front on Pfadt coilovers...

It would make sense if Pfadt sent the shorter spring standard with their coilovers IMHO. Perhaps the guys @ Pfadt might consider the change going forward? Just a thought. It would save folks a lot of hassle of buying additionals springs with the larger diameter spring perch than stock.
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Old 07-08-2011, 08:30 AM   #16
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My COR Brava wheels that I had put on yesterday has the problem of the TPMS sensors hitting the Pfadt coil-overs in the front and Pfadt trailing arms in the rear. I removed the plastic caps on the sensors and the front now clears the coil-overs. The back still hits and there is a loud tic everytime the sensor passes the rear trailing arm.

I drove it the 5miles home and now the left rear has aleak and went flat over night. I am trying to figure out what to do next. Does anyone know if the metal sensors are a shorter length than the rubber/plastic sensors?
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Old 07-08-2011, 11:31 AM   #17
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My COR Brava wheels that I had put on yesterday has the problem of the TPMS sensors hitting the Pfadt coil-overs in the front and Pfadt trailing arms in the rear. I removed the plastic caps on the sensors and the front now clears the coil-overs. The back still hits and there is a loud tic everytime the sensor passes the rear trailing arm.

I drove it the 5miles home and now the left rear has aleak and went flat over night. I am trying to figure out what to do next. Does anyone know if the metal sensors are a shorter length than the rubber/plastic sensors?
Can you send a picture of what you have so we can make a correct suggestion?

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Old 07-08-2011, 11:53 AM   #18
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Turns out the adapters did not come with the wheels. The sensors were mounted normally with the valve outside the tire. With the adapters, nothing sticks outside the wheel. Cor is taking care of it. Thanks Gio!
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Old 07-08-2011, 06:41 PM   #19
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Im running Forgeline 20x10.5 & 295's on all four corners w/Pedders Track II no rub issues and no issues on clearance(s).
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Old 07-08-2011, 09:18 PM   #20
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I have Pfadt coilovers and I just ordered a set of 20" Forgeline wheels (9.5" front, 11" rear). Will that combination be ok or should I contact Forgeline before they build my wheels? Thanks.
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Old 07-08-2011, 09:28 PM   #21
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Shouldnt be a problem. You should contact them to make sure. I had my Forgelines and Pedders on my car for a year and a half. I've went to Willow Spring servals times, Open Road Racing, Mojave Mile Shootout, no issues.
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Old 07-08-2011, 10:09 PM   #22
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I have Pfadt coilovers and I just ordered a set of 20" Forgeline wheels (9.5" front, 11" rear). Will that combination be ok or should I contact Forgeline before they build my wheels? Thanks.

You need to run 20x9.5 +27mm for the Pfadts
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Old 07-09-2011, 08:19 AM   #23
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I have Pfadt coilovers and I just ordered a set of 20" Forgeline wheels (9.5" front, 11" rear). Will that combination be ok or should I contact Forgeline before they build my wheels? Thanks.
Terri, I spec'd out your wheels to fit the Pfadt coil-overs. You are good to go!

Since this is an informative thread, I'll put this info here so that others may find it later on when searching.

Pfadt and KW coil-overs = less tire clearance than the OEM spring perch.
Pedders and BC Racing coil-overs = more tire clearance than OEM spring perch.

It is important to let your wheel seller know which brand of suspension mods you have installed, or plan to install in the future. Each brand can be accommodated to fit the wheel/tire combo, but that info needs to be known up front.

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Old 07-09-2011, 09:50 AM   #24
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Terri, I spec'd out your wheels to fit the Pfadt coil-overs. You are good to go!

Since this is an informative thread, I'll put this info here so that others may find it later on when searching.

Pfadt and KW coil-overs = less tire clearance than the OEM spring perch.
Pedders and BC Racing coil-overs = more tire clearance than OEM spring perch.

It is important to let your wheel seller know which brand of suspension mods you have installed, or plan to install in the future. Each brand can be accommodated to fit the wheel/tire combo, but that info needs to be known up front.

Tony
Tony,
I should have known you'd take care of me. I just couldn't remember if I'd mentioned the Pfadt coilovers to you prior to ordering the wheels. Thanks.
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Old 07-09-2011, 02:47 PM   #25
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You didn't mention it, I just looked up your build thread for info
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