Mountune Spring Review
This is a discussion on Mountune Spring Review within the Focus RS Suspension forums, part of the Focus RS Garage category; I recently installed a set of Mountune springs on my 2016 RS and the result is very good.
First of all, my car has stock ...
Mountune Spring Review
I recently installed a set of Mountune springs on my 2016 RS and the result is very good.
First of all, my car has stock suspension and MPSS tires, 43/40 psi cold pressures. The car is a weekend toy and mostly driven on twisty backroads, mountain roads and very little “around town” use. I do not race my cars, but I ndo drive aggressively and expect my cars to handle, drive and ride well.
Since buying my RS in July, I have had a love hate relationship with the suspension and mixed feelings about the handling. Note, already did a Tune+ to address the power and responsiveness. I ended up driving the car in “Normal” suspension setting all of the time regardless of which mode I was in bc the “Sport/Track" suspension setting was simply to bouncy/harsh to be used for anything except a very brief usage on higher speed corners to aid handling/roll. This meant that until now nearly all of my driving was in the “Normal”setting.
The car had the usual issues with some bouncing and pogoing in both settings, but unusable in “Sport/Track"suspension setting, and a firm but acceptable ride in “Normal”. At 7/10th speeds or less the “Normal” setting was fine for most anything, but as speeds picked up or at least corner entry speeds, then the front would start to roll and the rear could feel slightly unsettled.
Started researching the spring options, including H&R, Eibach, and Mountune, but they all lower the car more than I would have liked. It appears that H&R and Eibach actually reduce the spring rates and/or use progressively wound springs to offer a better ride. Assume that they went this way bc with the very stiff damping rates that Ford has in their struts adding spring rate potentially would make the harsh ride worse. Mountune, like H&R, does not give out their spring rates but made some vague statements about “ being close to stock” or “near stock rates”. Some posters have claimed that they are the same as stock, just shorter.In the past Mountune had Eibach build springs to there specs and they were slightly stiffer than OE rates, claimed to be 5-10% stiffer. I think that this is also true for these new springs. When I installed them, they immediately felt a slight bit stiffer…not much…but stiffer.
Mountune states that their springs are designed to enhance the car for track applications and acceptable street use. I would restate that…they have made a setup that enhances the “Track” setting and makes for a firmer but acceptable “Normal” setting for street use.
So how did they work?
Improved handling!, Reduced bouncing/pogo! 5/8” drop front and rear! Modest improvement in camber: ~ additional -0.2 to- 0.3 front camber, and -0.4 rear camber! Some increase in low speed impact bump and surface irregularity harshness! “Track” setting is now usable!
When I first installed them and took the car out for a test drive on roads near the house, the temps were around 50 deg. and the suspension felt firmer and the cornering flatter in “Normal” setting. As I gradually increased cornering speeds it was apparent that the front roll was improved, not gone but much better controlled and less. The bouncing was probably improved by 50% in both “Normal” and “Track” and pogoing was nearly gone. The one negative was that the car transmitted more road surface vibration/texture than the OE setup and was more sensitive/firm over smaller bumps. I noticed that when I switch to “Track” that the difference wasn't as much as before…it didn’t bounce or pogo like before and on good roads didn’t seem too bad.
A few days later I decided to take the car out on a more aggressive drive to see whether there was more to them than a nice but subtle improvement in front corner roll and reduction of the bounce/pogo. This day the temps were even colder to start out, around 45 deg, but they gradually improved to around 52. Starting out initially in “Normal” setting the car had the same low speed bump stiffness as the first day and with the exception of the stiffness the car felt like improved over stock. As I drove out to some roads where the speeds are higher, the curves faster including mixed high and low speed and sweeping as well as tight turns (all in 3-5th gear), I was questioning whether the stiffer ride was worth it. Then as I got further into the drive things started to change. Note: car was set to TRACK MODE with traction control switch back on and suspension setting in “Normal”. When I got near the “good roads” I started to push the car harder and the road compliance improved, but I also started to feel the rear starting to roll during higher speed cornering. After a few turns I switched to the “Track” suspension setting to see if that would address the roll…..it did! Infact as I drove further, rather than switching back from “Track” to “Normal” suspension after a high speed corner I left it “Track” suspension setting. As I drove the car it felt better and better and “ came alive”. I was able to carry much more speed into the corners, the car felt so much more stable and reassuring that I was simply amazed. “Track” setting was now doing what Ford had intended…and Mountune tweaked it to the point of making it a viable option. ***See Edit note at end of post regarding temperature******
My thoughts are that for the suspension valving to work properly you need to get some heat into the struts. Without the heat the car exhibits stiffness over modest bumps and irregularities but as they heat up the ride smooths out and the roll control really dials in the car. “Track” setting now becomes my choice for higher speed cornering and I can see how it would be great for the track.
As good as “Track” setting is, it isn’t for every application. After driving on some higher speed roads I headed for the “Tail of the Dragon”, a very tight and twisty section of mountain road with 300 + turns in 11 miles. To say it is tight is an understatement. Here the “Track” setting was too stiff for the tight undulating twists and turns. A simple switch to the “Normal” setting, made the car a joy to drive: no push, great balance and a smile from ear to ear….Yes Virginia, there is a Santa Claus!
I am very pleased with what the Mountune Springs have done for my car but there are a few negatives:
1) For someone like me that doesn’t use the car as a DD, nor has to really deal with the cold northern climates, the Mountune springs offer a great performance upgrade that are on the edge of acceptable ride comfort. For a DD user it might be a different story, the additional harshness may not be practical/acceptable. If you live in a warm climate ( Calif, TX, FL, etc.), these are made for someone that is looking for the sportier side of performance and/or occasional track use. In the frozen north they may not be a 4 seasons solution. ***See Edit note below***
2) They improve the appearance and retain the factory 1/2” rake with the drop of approx 1/2” - 5/8” front and rear. Bc they drop the car (I would have preferred less than 1/2” drop) for those people with clearance issues, they need to note that the front spoiler dropped ~ 5/8” (from 7’ to 6 3/8”).
3) I would have liked to have had less drop so that I didn’t reduce the compression distance, so I’ll need to see whether I end up contacting the bump stops under hard use or pot holes.
4) While bouncing and pogo is reduced quite a bit but it is still there…especially on cold struts, first thing in the morning.
I think that Mountune has delivered a great upgrade that is compatible with the OE 2 way struts and ideally suited for those that are either leaning to the sportier side of the driving envelope or planning to track or auto-x their RS. This setup truly makes the “Track” setting a usable and fun setup for street or track.
Update: after exchanging info with several owners that have installed them, it seems that the improved ride is not temp related as I had surmised but rather the springs actually breaking in. The other owners claimed substancial ride improvement within 1-2 weeks of install.
If this ends up being correct, no need to doubt it, then there isn't any reason why anyone couldn't use them and that the ride will approach stock levels but with much reduced bounce and pogo.
Last edited by lflouie; Yesterday at 02:31 PM.
I use "mode 5" (track with soft suspension, turn TCS back on) exclusively. Steering is heavier in this mode than in sport.
If the spring rates are the same I don't understand how pogo changes given that's a function of spring and damper rates.
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2016 SG FoRS
full PPF clear wrap
I don't believe the springs are the same as oem ...I think they're stiffer.......maybe + 5-10%...but purely a stab in the dark.
Originally Posted by fourZero
My point is that now when you use Track mode you can use the "sport/track" suspension setting instead of switching to normal setting in Track mode.
Last edited by lflouie; 03-19-2017 at 03:04 PM.
I've had mine on since Saturday and can confirm everything you've said. The ride is noticeably less harsh but not softer. The pogoing is reduced too. It's one of those must do mods.
I was set to buy these until reading about the cold weather etc.. what's your view on Daily driving in a colder climate
oops was the cold weather stuff edited out?
2016 Nitrous Blue RS2 with moonroof and winter wheel package.
Just wanna chime in and say that sport mode does not effect the shocks at all. so any difference in the suspension you might have noticed was a placebo. Thats why the little shock icon only appears in track
17' NB/RS1/Forged wheels/Winter Package
Previous rides: 2004 Srt-4, 2006 GTO, 2005 VW GLI Big Turbo, 2003 Z06, 2011 Tacoma, 2011 F150 Ecoboost, 2013 Mustang GT
they're talking bout sport mode of the dampers
Originally Posted by Exturbo
Keeping it pinned down while all cylinders are -6 is not good practice
Money comes and goes, RS don't.
Dude your life is also ticking away.
Buy th damn car and mod away.
The ST is an ST that's all it will ever be.
Regarding my comments on temps.....I may be off base. I've been in contact with a few owners that have installed these and their comments are that they actually soften as they break in. My assumption that it is temp related looks to be wrong...the softening seems to be due the springs "breaking in". Most people indicated that within 2 weeks they are noticeably better and nearly the same ride quality as stock.
Originally Posted by Soundwave
Last edited by lflouie; 03-20-2017 at 05:26 PM.
Mines been great in the cold weather. No issues.
Originally Posted by Soundwave
After letting the car settle for ~10 days I took it in for an alignment and was surprised by how little the readings changed. Picked up an additional -0.4 deg of front camber, an additional -0.2 deg rear camber. Toe changed very little in front, but bc I added rear adj toe arms I can't tell what affect the springs had on rear toe.
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