bmr springs vs pfadt springs - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

camaromax2k10 · 03-16-2011, 12:42 AM

I see that bmr lists their springs as 220frt and 460rear. I also found that pfadt lists their springs as 225frt and 425rear. there not much different in
the front springs but there is more difference in rear springs. I'm wondering if the stock struts would be better suited to the pfadt spring rates than they would to the bmr rates. also wondering if one would give
a better overall ride than the other? I know that bmr have a lifetime
warranty for sagging. what warranty does pfadt have?

axis · 03-16-2011, 01:16 AM

Theoretically, the Pfadts should ride a tad softer with the softer spring rate. Not sure how much actual ride difference there is between the two though. Even 35?? isn't a lot of difference. I know I love my Pfadts and haven't heard from anyone that hasn't like theirs. I'm sure the BMR guys will say the same thing though. It comes down to what drop you want and what company you trust. I chose the Pfadts for their 1.25in drop and name in making top notch suspension parts for the Vette. They haven't disappointed me yet.

BMR guy · 03-16-2011, 11:04 AM

In this application, variation in front spring rates means way more than in the rear rates. The rear motion ratio on a Zeta platform is much greater than the front which is why the rates are so much higher to begin with. With a high motion ratio the spring rates will always vary more from company to company. When you are talking 35 lbs/in. difference on a 400+ lb/in spring, I doubt very seriously anyone can actually "feel" a difference between the two brands. Now if you added 35 lbs/in to the front rates, that's a different story...

PfadtRacing · 03-16-2011, 11:19 AM

Thanks for the kind words Axis.

We carefully selected spring rates based on what we think will provide the best combination of handling and appearance and still retain a long service life of your OEM shocks. Pfadt springs will not sag over the course of their service life, but if you're concerned with the quality of any of our products please feel free to contact us. We really do pride ourselves on customer service around here and want to make sure everyone is pleased with their parts.

99prbms · 03-16-2011, 12:06 PM

just curious... what spring is going to give you more of a drop?

axis · 03-16-2011, 03:19 PM

Quote:

Originally Posted by 99prbms

just curious... what spring is going to give you more of a drop?

The spring rate doesn't translate into a certain drop. The spring is manufactured to give a certain drop and the spring rate is the "stiffness" of the recoil. The drop of each spring set is usually quoted in the description. The "typical" drop is 1in. Pfadt dropped theirs a tad lower to 1.25in to enhance the look while staying within the adjustability of the OEM alignment parts. BMR has a some different height springs as does H&R. Just know that the lower you go the higher the spring rate HAS to be in order to keep from bouncing off the bumpstops. That translates into a stiffer ride.

chevy 3 · 03-16-2011, 03:51 PM

I just installed my lower springs and go for four wheel line up on Friday. I'll let you know how they feel. Patric at apex rocks.

Apex Motorsports · 03-16-2011, 08:23 PM

Quote:

Originally Posted by 99prbms

just curious... what spring is going to give you more of a drop?

Pfadt springs are 1.25 and BMR offers 1 inch, 1.4 inch, and a "Split" 1.4 front/1 inch rear.

caverman · 03-16-2011, 09:51 PM

Quote:

Originally Posted by chevy 3

I just installed my lower springs and go for four wheel line up on Friday. I'll let you know how they feel. Patric at apex rocks.

Make sure they "tune" your bushings before they align the car. When I lowered my car the first guy didn't tune the bushings properly and I always had a slighly bouncier feel to the car. I just recently had it done right and it took some of the bouncy feeling away. I definately think it made a difference.

Apex Motorsports · 03-16-2011, 09:55 PM

Quote:

Originally Posted by caverman

Make sure they "tune" your bushings before they align the car. When I lowered my car the first guy didn't tune the bushings properly and I always had a slighly bouncier feel to the car. I just recently had it done right and it took some of the bouncy feeling away. I definately think it made a difference.

"Time" the bushings. Definitely a best practice.

chevy 3 · 03-16-2011, 10:57 PM

Ill make sher they do.I called a couple places and theye didnt know what i was talking about. but as they say the third time was a charm .the guy i talked too brout this up before i could ask.cant wait for this setup. Name: iphone pics 227.jpg
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BMR Suspension · 03-17-2011, 09:25 AM

I doubt that you will notice the difference btw the BMR spring rates and the Pfadt's spring rates unless you are an experienced open track racer.

As mentioned, BMR has a LIFETIME WARRANTY against spring sag.

The retail price for BMR springs is $70 less.

BMR offers 1" drop springs and 1.4" drop springs. It is very common to install the 1.4" drop springs on the front and the 1" drop springs on the rear.

My recommendation is to check the warranty period for the Pfadt's springs. Verify that they have an equivalent warranty before considering their springs.

camaromax2k10 · 03-17-2011, 03:35 PM

thanks, for the info. I will check into the warranty for pfadt before I make a decision.

PfadtRacing · 03-17-2011, 03:50 PM

If after installing our springs you have any issues with sagging, please contact us. We have many customers with hard miles on our springs and have never heard or expect to hear of any issues with durability. We do offer a lifetime warranty to the original owner of our springs.

If you have any more questions please let us know!

03-16-2011, 12:42 AM	#1
camaromax2k10 Drives: 2010 1SS ABM Join Date: Feb 2010 Location: Sacramento Ca. Posts: 41	bmr springs vs pfadt springs I see that bmr lists their springs as 220frt and 460rear. I also found that pfadt lists their springs as 225frt and 425rear. there not much different in the front springs but there is more difference in rear springs. I'm wondering if the stock struts would be better suited to the pfadt spring rates than they would to the bmr rates. also wondering if one would give a better overall ride than the other? I know that bmr have a lifetime warranty for sagging. what warranty does pfadt have?

03-16-2011, 01:16 AM	#2
axis Search Ninja Drives: 2010 Black 2SS/RS A6 Join Date: Oct 2009 Location: Central Ark Posts: 7,183	Theoretically, the Pfadts should ride a tad softer with the softer spring rate. Not sure how much actual ride difference there is between the two though. Even 35?? isn't a lot of difference. I know I love my Pfadts and haven't heard from anyone that hasn't like theirs. I'm sure the BMR guys will say the same thing though. It comes down to what drop you want and what company you trust. I chose the Pfadts for their 1.25in drop and name in making top notch suspension parts for the Vette. They haven't disappointed me yet. __________________ 2010 Black 2SS/RS A6 Halltech CF 102 fed GPI modded intake manifold Bo (knows) White ported TB Kooks LT's/ Dynomax VT Pfadted (springs/sways) Dyno tuned by Rhino and GPI I once parallel parked a train.

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03-16-2011, 11:04 AM	#3
BMR guy Drives: 2010 1SS Join Date: Jan 2010 Location: Tampa, FL Posts: 1,002	In this application, variation in front spring rates means way more than in the rear rates. The rear motion ratio on a Zeta platform is much greater than the front which is why the rates are so much higher to begin with. With a high motion ratio the spring rates will always vary more from company to company. When you are talking 35 lbs/in. difference on a 400+ lb/in spring, I doubt very seriously anyone can actually "feel" a difference between the two brands. Now if you added 35 lbs/in to the front rates, that's a different story...

03-16-2011, 11:19 AM	#4
PfadtRacing Drives: 2010 Camaro, 2006 Z06 Join Date: Feb 2009 Location: SLC, UT Posts: 3,370	Thanks for the kind words Axis. We carefully selected spring rates based on what we think will provide the best combination of handling and appearance and still retain a long service life of your OEM shocks. Pfadt springs will not sag over the course of their service life, but if you're concerned with the quality of any of our products please feel free to contact us. We really do pride ourselves on customer service around here and want to make sure everyone is pleased with their parts.

03-16-2011, 12:06 PM	#5
99prbms Drives: 2010 2lt Join Date: Oct 2010 Location: new hampshire Posts: 85	just curious... what spring is going to give you more of a drop?

03-16-2011, 03:51 PM	#7
chevy 3 NEcamaro5 Drives: Black 2ss rs 1LE Join Date: Apr 2009 Location: mass Posts: 4,329 View My Garage	I just installed my lower springs and go for four wheel line up on Friday. I'll let you know how they feel. Patric at apex rocks.

03-16-2011, 10:57 PM	#11
chevy 3 NEcamaro5 Drives: Black 2ss rs 1LE Join Date: Apr 2009 Location: mass Posts: 4,329 View My Garage	Ill make sher they do.I called a couple places and theye didnt know what i was talking about. but as they say the third time was a charm .the guy i talked too brout this up before i could ask.cant wait for this setup.

03-17-2011, 09:25 AM	#12
BMR Suspension Drives: 2016 Camaro 2SS Join Date: Aug 2009 Location: Tampa, FL Posts: 498	I doubt that you will notice the difference btw the BMR spring rates and the Pfadt's spring rates unless you are an experienced open track racer. As mentioned, BMR has a LIFETIME WARRANTY against spring sag. The retail price for BMR springs is $70 less. BMR offers 1" drop springs and 1.4" drop springs. It is very common to install the 1.4" drop springs on the front and the 1" drop springs on the rear. My recommendation is to check the warranty period for the Pfadt's springs. Verify that they have an equivalent warranty before considering their springs.

03-17-2011, 03:35 PM	#13
camaromax2k10 Drives: 2010 1SS ABM Join Date: Feb 2010 Location: Sacramento Ca. Posts: 41	thanks, for the info. I will check into the warranty for pfadt before I make a decision.

03-17-2011, 03:50 PM	#14
PfadtRacing Drives: 2010 Camaro, 2006 Z06 Join Date: Feb 2009 Location: SLC, UT Posts: 3,370	If after installing our springs you have any issues with sagging, please contact us. We have many customers with hard miles on our springs and have never heard or expect to hear of any issues with durability. We do offer a lifetime warranty to the original owner of our springs. If you have any more questions please let us know!