Cadillac CTS-V - Rubber Spacer Question - H&R Springs MM Spacers

I have H&R Springs with Mighty Mouse Spacers and the rear is way too low, reversed rake! :bang:

I want to do Edmund's mod in this thread: http://www.cadillacforums.com/forums/2004-2007-cadillac-cts-v-performance/213116-definitive-h-r-mm-spacer-lowering-3.html

My question is does anybody know what hardness to buy? 50A, 60A or 70A? Also is 3/8" a good thickness? here is the link: http://www.mcmaster.com/#catalog/118/3528/=i7eg6g

Thanks for any feedback!

3/8ths thick rubber ends up raising the fender by just a bit under a half inch, because of the suspension arm angles. 60A should be just fine. Good luck; hope it works for you.

3/8ths thick rubber ends up raising the fender by just a bit under a half inch, because of the suspension arm angles. 60A should be just fine. Good luck; hope it works for you.

Sweet, thank you Edmund ordering today!

looks like ill be doing this along with smaller spacers in the MM kit and rolling my fenders. I want 285 35 19s to fit.

Shouldn't need a shorter spacer. MM kit is fine. The rubber spacer in the rear should do all the leveling u need.

looks like ill be doing this along with smaller spacers in the MM kit and rolling my fenders. I want 285 35 19s to fit.

I had to roll my fenders too, try and rent a fender roller if you don't have one makes the job way easier and more uniform. My rear end tires are sitting a good 3/4 of an inch or more up into the fenders, way too low!

I like it slammed like that. Hoping I can roll my fenders and tuck a 275/40 with no issues

I'll post a before and after picture this weekend, you'll see what I mean by to low in the back. The front I like, looks clean. I scrape everywhere I go, although it doesn't help that Seattle roads are jacked!!

Yes! Please post pics! I'd like to see what to expect. My car comes out of the shop early next week from getting the new bumper cover and cowl hood both painted and installed. Just ordered the brakemotive kit so ill be doing the drop and brakes all at once when it comes out along with either installing the complete magnaflow catback or just having the Corsa mufflers i have sittin in the garage installed in the stock piping since i already have the x-pipe and no mufflers.

Ready to get everything on it and be done. lol

This is mine. H&R with MM spacers on 19" rims
http://sphotos.xx.fbcdn.net/hphotos-prn1/542938_369618379751824_820376717_n.jpg

That looks great!!! Doesnt look too low to me. Thats right where i'd want it if not a tad lower than that even.

And on of the car while driving
http://i959.photobucket.com/albums/ae74/Firetrd/Ocean%20City%205-17-12/DSC_0123.jpg

In OC with two LITTLE people in the back seat i ended up cutting my tires on 275 35 19s. I am going to finish the ghetto roll we started after that. Then I just want to go back to a slight forward rake. Plus I want to stiffen teh rear a LITTLE. So smaller spacer in the MM spacer and then I am emailing HR to get the SAME or similar drop but with a STIFFER rear spring.

Shouldn't need a shorter spacer. MM kit is fine. The rubber spacer in the rear should do all the leveling u need.

I want to go to smaller spacers NOT for leveling/ride height. More to have the rear shock stiffer. Little too much movement with the full sized spacers in.


I want this height or maybe a smidge higher(want to run 285s) but STIFFER.

I see what you're saying. Car looks great though!!!

So are the H&R's a little too soft? I plan to roll my fender lips regardless but i was going to have some stock wheels widened to 10" and run a 295/35/18 back there. Im sure this would require modified trailing arms but that should be it.

You saying the rear springs a little soft though makes me wonder if ill get too much sag when launching. I was going to sell the springs and run a GC kit but the kit doesnt seem to go as low as i'd like in the rear having only a 1" drop. The H&R height is what im looking for.

Why im asking them for a stiffer rate spring option.

But I am hoping putting smaller spacers in teh kit and a small rubber spacer under the spring will get me there slightly. Stiffer because of shock and a little more clearence with teh rubber spacer.

FYi with a 10" rim, you NEED to get trialing arms. Stock ones were basically touching the inside of the rim(NOT THE TIRE) static much less in motion. I am runnign the MAP arms and its still CLOSE.

I dont see 295s(on a 19 in particular) happening with H&Rs and even ROLLED fenders.

I hear ya. Sounds like what you're doing should work though.

How much do the MAP trailing arms run?

I made a thread awhile back asking about widening stock wheels and how wide we can go with them and 10" was said the be the limit (with aftermarket trailing arms of course).

A 295 may fit. I ran a 295/35 on stock wheels on my old car and they didnt fit bad. They bulged some but pretty close to the same look as a 275/40 on the stock wheel. Id prob be happy with the 275/40 on a 10" wheel since it will look much wider already as it is. Maybe a 285/40 but a 295/35 would be nice if it would work.

With the right set of springs the GC/KW kits can go any height you want as springs can be bought at different heights and stiffness. If you want lower than the perch can provide at min adjustment then buy a 1-2 inch shorter spring.

I dont know if the MAP arms are still for sale. I got mine used.

I know someone was mentioning the BMRs can be ordered or modded to work.

With the right set of springs the GC/KW kits can go any height you want as springs can be bought at different heights and stiffness. If you want lower than the perch can provide at min adjustment then buy a 1-2 inch shorter spring.

Well the KW kit is way different from my understanding due to the kit being complete with aftermarket shocks and more adjustments. Those are fully adjustable as it is and can go as low as u want them to. The K-sports are the same as far as height adjustment but they aren't as good of quality as the KW setups from what i've seen posted here on the forum.

As far as the GC kit, i was told there was a way to remove the perch for additional drop but im not sure if thats really the best way to get the drop you want. Seems like having the perch there would be a good idea. lol I believe it was ferny that had the GC kit slammed with the perches removed.

The shorter spring solution is a good idea and im assuming i'd only need a pair for the rear since the front will adjust as low as u want already. How much are springs alone? Anyone done this?

I wonder if GC will allow you to customize your order if you order the kit new by having an 8" spring for the rear instead of the 10" which is what i believe comes standard with the kit.

I have a buddy that had a new GC kit that is still in the box and hasnt been installed yet that hes thinking about selling me for $400. Believe its the 600/650 combo though with obviously the standard length springs.

I dont know if the MAP arms are still for sale. I got mine used.

I know someone was mentioning the BMRs can be ordered or modded to work.

Hmm... I was told the BMR's were identical to stock but thicker for strength which actually makes it a tighter fit clearance wise than even the stock arms. If you can order them custom with more clearance, that would be cool.

i dont remember the extact thread. But someone was saying someone(company I think) was modding other ones to fit.

Even with teh MAP arms its TIGHT.

Oh I saw that thread. I thought it was a member that was making them. "killernoodle" I think IIRC.

Might be it. But might be your ONLY option for a 10" wheel.

Any narrower than 10" and it seems pointless to widen them at $200 each plus shipping. It would be nice if we could fit an 11" wheel back there but even 10" wide would be a big improvement!

This is the only picture I have of mine in the rear right now, kind of hard to tell in this. I'll get a better shot tonight.

http://i949.photobucket.com/albums/ad335/ellioth3771/DSC02685.jpg

just order a set of the Linea corse...

they are about 200 a wheel.

Or find another 18" x 10"

That's an option for sure. If I go aftermarket, I'd like to go with the same 19's you have or maybe the forgestar's. But... then tires will make it a lot more when I already have good rubber on my stock 18's.

I haven't seen any aftermarket staggered 18's that i like the look of more than the factory wheels.

Etcts-v... Wow... That is low! Looks like yours sits even lower than biggie's car.

that is SUPER low.

That's an option for sure. If I go aftermarket, I'd like to go with the same 19's you have or maybe the forgestar's. But... then tires will make it a lot more when I already have good rubber on my stock 18's.

I haven't seen any aftermarket staggered 18's that i like the look of more than the factory wheels.

I like the Team dynamics(favorite wheel EVER) for the CTSV

http://www.lindsaycadillac.com/performanceparts.htm

I used to have the same wheel in a 17 for my SpecV. 17lbs at 17x7

Not a bad looking wheel. Just never been a big fan of multiple thin spoke wheels. I like fatter spokes and less of them. Just my opinion but I still appreciate them and still think they look nice. Doesnt look like stock centercaps will fit them though. And being just .5" wider, they aren't super appealing over the stockers.

Now in the case of the wheels u have, being 19's and staggered, that would be much more appealing to me if I were to go aftermarket. Maybe not those wheels exactly but something in that size.

I want to go to smaller spacers NOT for leveling/ride height. More to have the rear shock stiffer. Little too much movement with the full sized spacers in.


I want this height or maybe a smidge higher(want to run 285s) but STIFFER.

Changing the spacer in your MM kit is not going to change the stiffness of your spring. It may change the operating position of your shock so that it's closer to the range where it (the shock) begins to stiffen up and attempt to self-level. I don't think that'd necessarily be what you want but I could be wrong.

I think what you'd want to do is maintain the current ride height, and also maintain the shock working within its "normal operating range" but just stiffen the spring so there's less travel. I'd try installing a spring coil spacer somewhere in the rear spring.

Something like one of these http://www.team-bhp.com/forum/attachments/technical-stuff/847688d1322290857-coil-spring-adjusters-vfm-fix-honda-civics-lousy-soft-rear-suspension-spacer2.jpg

http://www.team-bhp.com/forum/attachments/technical-stuff/847687d1322290857-coil-spring-adjusters-vfm-fix-honda-civics-lousy-soft-rear-suspension-spacer1.jpg

Depending on the thickness of the spacer it probably wont change your ride height by much, but it will reduce the effective length of the spring and increase the stiffness of the spring as a whole.

springs ride fine. I just want more stiffness in the shocks, mostly for large bumps. Something to just quell that motion. So a slightly stiffer shock with a little spacer(one under the springs lower mount) should be enough i hope.

That coil spacer idea is a good one. I may do that. I want the car low but I'd prefer it to be a little stiffer than normal out back to avoid the ass end sagging too much when I launch it. I know the weight transfer is good but I'm going to run MAP trailing arms and widened stock wheels to 10" with hopefully a 295/35 on em.

Rubber showed up!

http://i949.photobucket.com/albums/ad335/ellioth3771/photo.jpg

rear isnt too low.. front is too high!!! ;)

rear isnt too low.. front is too high!!! ;)


That's one way of looking at it. Haha. I have a hard enough time getting in and out of my driveway as it is with the H&R spring height up front. I'd go lower if I could but it would preclude me from being able to drive my car.

http://www.prlog.org/11543465-bridjit-curb-ramp.jpg

also if you raise the rear it will pitch the nose of the car DOWN slightly.

http://www.prlog.org/11543465-bridjit-curb-ramp.jpg

also if you raise the rear it will pitch the nose of the car DOWN slightly.

Haha, love this! Now I just need to hire someone to drive around with me in my car and every time I come up to a driveway or speed bump he jumps out and drops these down!

The added rubber worked and certainly helped, both the front and back are equal now, I used the 1/2" stuff. Was hoping for a little bit of a rake, but oh welll..

IMO, front is too high. I like the rear low. Only thing is, i dont want to go cutting on aftermarket coils. lol

Holy shit I need these..

http://www.prlog.org/11543465-bridjit-curb-ramp.jpg

also if you raise the rear it will pitch the nose of the car DOWN slightly.

your car sit super low i have h&r's on my car and the rear is not tucking at all.

http://i1183.photobucket.com/albums/x478/reuqse/photo-54.jpg

Upsmike... That is the exact stance I want. I like that!! Maybe I'll just install em and see where it sits. If I'm happy, I'll keep em, if not, I'll sell em and go another route. That's plenty low for a daily anyway.

Upsmike... That is the exact stance I want. I like that!! Maybe I'll just install em and see where it sits. If I'm happy, I'll keep em, if not, I'll sell em and go another route. That's plenty low for a daily anyway.

i thought the same thing its just right i like lil to no gap on my cars, ill get some pix up when i put 275/35's on the rear. and again this is no spacers, just the springs.

No spacers as in the rubber spacers their referring to here in this thread? U must have a MM kit though unless that pic was taken after the shocks settled down.

I have a 275/40 on mine so I plan to roll the fender lips when I put em on.

275 40 will work on a stock wheel without rolling. but on a 19... I was dumb