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Discussion Starter #1
For those of you who have the MRC option do you think it improves the ride noticeably? For me I havent seen any improvement in smoothing out the ride. Or maybe its the Pirelli run flat tires making the ride harsh and tiresome. Or maybe I am not understanding the benefits of MRC? Any comments? RPO options PDV and PDZ are for MRC with 18inch wheels.
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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For the late 2002 and 2003 Seville TS (STS) vehicles the MRC stiffens the ride considerably and the instantaneous body control allows the vehicle to be aggressively driven to some pretty impressive limits. BUT, for those looking for the marshmallow "Cadillac ride" you're just plain out of luck. Cadillac ride and performance are mutually exclusive terms. I like it. I like it a lot. (Raised on Jaguar, Austin-Healey and Lamborghini - anything BUT a "Cadillac ride")
 

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For the late 2002 and 2003 Seville TS (STS) vehicles the MRC stiffens the ride considerably and the instantaneous body control allows the vehicle to be aggressively driven to some pretty impressive limits. BUT, for those looking for the marshmallow "Cadillac ride" you're just plain out of luck. Cadillac ride and performance are mutually exclusive terms. I like it. I like it a lot. (Raised on Jaguar, Austin-Healey and Lamborghini - anything BUT a "Cadillac ride")
I won't disagree with any of that, BUT... the "harsh and tiresome" stuff is a separate issue and much of it is attributable to the extremely stiff sidewall of the run-flat tire. This is exacerbated by the very low profile tires that so popular nowadays. In any case, if you change out the run-flats for conventional performance tires of the same size, much of the harshness will go away.
 

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MRC is hard to describe for me. It's certainly stiff, but I would never describe it as harsh. I've certainly never experienced a ride like it in a conventional shocked vehicle. Suspensions that are as stiff on little bumps are brutal on large bumps, and suspensions that handle large bumps with such aplomb can not take corners like this.

Even switchg from the Pirelli run flats to Michelins has made a difference - I would imagine going to non run flats would make an even better difference

That said, I do wish Tour mode was a bit more "tour-y"
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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Yep ^^^

Using the Cooper CS5-V tires the 2002 F55 ride is not "harsh" - it's stiff under normal driving, tight during aggressive driving. Never having had experience with run-flats, that's out of my realm.

For everyday normal driving (mostly near-rural/highway) I carry my tire pressures - cold - at 32 psi. When I go over to Caroline County for some rural road twisties I use 36 psi all around.
 

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CTSVsport said:
I would imagine going to non run flats would make an even better difference That said, I do wish Tour mode was a bit more "tour-y"
I have non rf PSSs and the ride is oh so nice in any mode.
 

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Discussion Starter #8
I did read more details about MRC and it purports to improve overall ride quality - besides what aid it may provide for sport driving. Was wondering what could be checked to ensure its functioning properly.
 

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For those running without RFs (which I definitely think are detracting from the ride), do you have a tire inflation kit on board? I think I will swap out when I finally get my 2016.
 

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My CTS does not have MRC and has the Bridgestone RFs. It seems like there are a lot of negative comments with the Pirelli RFs, but not so much with the Bridgestones (I'm very happy with them and don't consider the ride harsh). I haven't seen a comparison between the two tires, maybe the Bridgstones perform better.

I'm not a fan of Slime. I carry a tire plug kit, something like this <http://images.gasgoo.com/MiMwMDRfMDA0IzgzNDA4MDEwMA--/auto-part-tire-repair-kit.jpg> and have used it several times over the years (along with a mini-compressor before run-flats), never have had an issue with needing to replace a tire (esp nice with awd and partial tread depth wear).
 

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If you want to see what MRC can do, look up the Motor Trend video comparison of the Vsport vs. the Lexus GS. They show the two cars driving over the striped track curb. The Vsport rolls over it like flat pavement, and the Lexus gets quite a jolt.
 

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I ran all-season non-RFTs with taller sidewall all winter and didn't notice very much difference in overall ride quality. I did, however, notice a significant decrease in the dartiness of the car (with the low-profile summer RFTs, the car is super sensitive to steering input, making highway cruising a slight bit more of a chore). Like some others, I would appreciate a "cushy" setting on the MRC. I find the Touring setting pretty annoying, actually. I feel like the car bounces over bumps rather than soaks them up. Sport is far more to my liking as far as body control is concerned, but it definitely allows you to feel everything. Overall, I really like it because it makes the car feel far lighter and smaller than it really is. I gladly give up a bit of comfort for that.
 

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I have MRC and live where the roads are terrible, I have found that in tour mode and on a consistently bumpy surface the ride quality if much improved over my last GM non MRC car. I'm even more impressed when in sport mode, although harsh, it feels like the car is all hunkered down much like a GT car. When in tour mode I do feel single bump responses are a bit over damped on compression giving a harshish ride. I'd like to tour mode to be a bit softer or maybe have a highway mode that is extra plush.
 
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