suspension suggestions - Page 3 - MR2 Owners Club Message Board
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post #41 of 53 (permalink) Old January 9th, 2017, 00:05
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Sidewall height makes a huge difference in a lowered car, which is why I'm running 16 inch wheels with 50-series tires all around. The rear is slightly oversized, but it works.
Tire pressures:
Front - 24-26 psi
Rear - 28-30 psi

I'm running Bilsteins paired with Eibach Sportlines. It's comfortable enough to daily drive, but large bumps in lowered cars are always going be uncomfortable. I don't have to be a d-bag and hold up traffic while going over things too. I just drive. It did have terrible understeer after my V6 swap, so I've mitigated that a bit and tweaked things to suit my driving style. Sway bars are 17/22mm (F/R). Rear is TRD. I found that the front TRD bar kept causing my front end to wash out at slow speeds, as my car wasn't using the front tires that well. Toe-in at rear is set to 93+ settings even though I have 91 suspension (4mm), 0 toe up front (stock).

I do have the full 1991 TRD bushing kit installed, as I've had my car for roughly 15 years now.
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post #42 of 53 (permalink) Old January 18th, 2017, 02:06
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Quote:
Originally Posted by RePete View Post
I think there are various factors to consider when broad statements like that are made:
In comparison to a stock mk2 MR2.. it's garbage. In comparison to virtually any other stock vehicle on the road.. it's garbage. Compared to modern sportscars I've driven.. It doesn't really matter. The MR2 is old, archaic and the ride quality is trash compared to pretty much anything ever built. I did say it's great for fun driving (which it is). But it does not, in any way, lend itself to comfort, ever, for all the reasons and arguments you listed

Note, too, that I've driven my car on 205/50/15s (beefy sidewalls) as well as rubber band 17" tires.



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Originally Posted by Alex W View Post
Out of curiosity, are your bump stops cut? The TRD springs lower probably 1.5", and with stock length bump stops you aren't going to have much travel before hitting the bump stops.

Another thought, your struts are set all the way soft right?
Yeah, all the way soft. It's just the car as a whole. Short travel + Mac Strut + Short Wheel Base + Tiny suspension bushings = sharp, jarring, bumpy ride.
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post #43 of 53 (permalink) Old January 18th, 2017, 02:11
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Pretty much this. I think i am at the end of my "daily drive the MR2" days, though. And that means that it's probably time for coilovers! And 17" staggered wheels again! And moAR loud exhaust!
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post #44 of 53 (permalink) Old January 18th, 2017, 09:23
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...But it does not, in any way, lend itself to comfort, ever, for all the reasons and arguments you listed ...
Well, like I posted, one man's garbage is another man's smooth. It's a subjective thing, which is why I totally disagree it's a garbage ride - deuce has been my DD for over a decade. I've driven dozens of MR2s as well as my fair share of modern luxury cars and it's a no-brainer that my own current setup is smooth, quiet & tension-free when I compare to others - but can be punishing when there's a weak link anywhere along the suspension/wheels/tires.

I find the true 'comfy-wumfy' test is a female in the passenger seat, she will always ground you with the uncensored truth on what she thinks. It's usually the same thing: "Firm, but comfortable."
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post #45 of 53 (permalink) Old January 18th, 2017, 12:15
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Well, like I posted, one man's garbage is another man's smooth...
This hinges on the condition of one man's spinal cartilage.
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post #46 of 53 (permalink) Old January 19th, 2017, 14:47
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Originally Posted by RePete View Post
Well, like I posted, one man's garbage is another man's smooth. It's a subjective thing, which is why I totally disagree it's a garbage ride - deuce has been my DD for over a decade. I've driven dozens of MR2s as well as my fair share of modern luxury cars and it's a no-brainer that my own current setup is smooth, quiet & tension-free when I compare to others - but can be punishing when there's a weak link anywhere along the suspension/wheels/tires.

I find the true 'comfy-wumfy' test is a female in the passenger seat, she will always ground you with the uncensored truth on what she thinks. It's usually the same thing: "Firm, but comfortable."
Daily driving mine since February 2004. Even stock, it's garbage. It's just the nature of the car and I'm at peace with it. I refuse to pretend that the car's ride quality, regardless of suspension/tires/wheels/modifications, is anything other than uncomfortable, however. I guess that's just my opinion, though. I've had enough seat time in other cars from my time working as a mechanic to realize how compromised MR2s are.

And don't get me wrong, I love my car. I'm just honest about its (many) flaws.
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post #47 of 53 (permalink) Old January 19th, 2017, 15:38
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Garbage is just not part of my description of ride comfort on my deuce - but it's possible yours just rides like that for whatever reason - or the car isn't compatible to your own 'butt-dyno'.

A garbage ride is a perfect description for off-the-shelf coilovers on these cars, about the worst possible IMO.
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post #48 of 53 (permalink) Old January 20th, 2017, 09:38 Thread Starter
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Quote:
Originally Posted by Jason.MZW20 View Post
Sidewall height makes a huge difference in a lowered car, which is why I'm running 16 inch wheels with 50-series tires all around. The rear is slightly oversized, but it works.
Tire pressures:
Front - 24-26 psi
Rear - 28-30 psi

I'm running Bilsteins paired with Eibach Sportlines. It's comfortable enough to daily drive, but large bumps in lowered cars are always going be uncomfortable. I don't have to be a d-bag and hold up traffic while going over things too. I just drive. It did have terrible understeer after my V6 swap, so I've mitigated that a bit and tweaked things to suit my driving style. Sway bars are 17/22mm (F/R). Rear is TRD. I found that the front TRD bar kept causing my front end to wash out at slow speeds, as my car wasn't using the front tires that well. Toe-in at rear is set to 93+ settings even though I have 91 suspension (4mm), 0 toe up front (stock).

I do have the full 1991 TRD bushing kit installed, as I've had my car for roughly 15 years now.
What size wheels and tires are you running? What offset for wheels?
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post #49 of 53 (permalink) Old January 27th, 2017, 19:13
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What size wheels and tires are you running? What offset for wheels?
205/50/16 front, 225/50/16 rear, all 16x7
Standard offset of about 45mm

I want the rears closer to 35mm though to make them sit flush with the fenders. So, if/when I find wheels I like, I'll probably run more rear tire (8" or 9" width wheels 245-255 tire) coupled with more front negative camber and a tiny bit of toe-out. I'd like to keep the front/rear section width difference at 20mm (235 f/255 r).

I like a neutral handling car. When it oversteers, it's so controllable. I can't stand understeer though, so unless I can balance out that extra rear grip, I won't change much.
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post #50 of 53 (permalink) Old February 3rd, 2017, 09:17
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Just to add a little something to the comfort convo. I drive two cars my turbo with Bilstein and trd springs and my wife's '07 mustang GT with the original suspension and 200k on the odometer. I'll go over rough patches of pavement in my Turbo and think the suspension is harsh compared to the same patch in my wife's car. Almost all of those patches I think are rough the city has repaved within a year so maybe the suspension isn't as bad as I think. They have been paving almost all the roads here over the past two or three years and it makes a world of difference.
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post #51 of 53 (permalink) Old February 3rd, 2017, 09:31
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Quote:
Originally Posted by SuperMR2 View Post
Just to add a little something to the comfort convo. I drive two cars my turbo with Bilstein and trd springs and my wife's '07 mustang GT with the original suspension and 200k on the odometer. I'll go over rough patches of pavement in my Turbo and think the suspension is harsh compared to the same patch in my wife's car. Almost all of those patches I think are rough the city has repaved within a year so maybe the suspension isn't as bad as I think. They have been paving almost all the roads here over the past two or three years and it makes a world of difference.
Interesting add-on to the conversation here... A few years ago I helped a friend install Koni Yellow shocks and Ford Racing springs on his '07 Mustang GT. Compared to the stock suspension, we both thought that the ride was improved with the new suspension, even though the springs were stiffer than stock and lowered the car. A bit more firm as you might expect, but overall a better ride due to the dampers.


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post #52 of 53 (permalink) Old February 3rd, 2017, 15:12
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Originally Posted by SuperMR2 View Post
...Bilstein and trd springs...
That combo has always been known to be a little firmer the usual. TRD springs are pretty low, and while the non-adjustable Bilsteins are among the top performance choices for aftermarket dampers on the SW20, owners have noted that they are too firm for some.
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post #53 of 53 (permalink) Old February 4th, 2017, 01:16
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Seems the TRD springs are a custom Eibach make.

Eibach Pro-Kit
F: 100-210lb/in. progressive
R: 140-303lb/in. progressive

Eibach Sportline
F: 74-189lb/in. progressive
R: 120-348lb/in. progressive

Compare:

TRD
F: 162.4-168lb/in., progressive
R: 280-347.2lb/in., progressive

Much narrower progressive rates, so they are harsher, but have less variability in handling. I don't mind progressive rate springs. I've always found my car to be predictable, and it has excellent wet traction (softer spring rates help).

Don't forget about this awesome thread where this info came from: Spring Rates for A Bunch of Aftermarket Springs
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