[Charles33982]

Originally Posted by Lappy

Also no rubbing at all with 255/35/19s in the front.

Just to confirm, this was on the Apex 19x9's? What is the offset?

Trying to determine if I can pull this off on my 21' M2C on the OEM wheels assuming I'm around -2 front camber.

[Phab]

For the OG M2, 275/35R18 and 295/35R18 in RE-71RS the way to go?

[daeqsw]

How much more competitive is the M2C in BS?

[E90convert]

Originally Posted by daeqsw

How much more competitive is the M2C in BS?

Looking at previous pro solo records, looks like its a wash. The M2C is heavier, but has more power. The OG M2 makes torque sooner in the RPM band, and is a bit lighter.

[mykrrrr]

Originally Posted by dabootski

I've run a set of MCS 2 way, non-remotes custom built for B Street on my OG M2 the past couple seasons and will be posting them for sale soon if you're interested. These were purchased from Jeff @ ProPartsUSA with his recommended valving. My co-driver Jay and I had much success running these at SCCA national tour events the last 2 years and really felt they improved the handling the car, especially on lower grip sites which we struggled with the previous 2 years on stock dampers.

The improved handling from compression increase unfortunately does come at the expense of a harsher street ride. If that's a concern, I wouldn't hesitate to valve these a bit softer as we never ran them anywhere near full stiff except at Lincoln airpark which is a high grip surface. One other thing to consider with the MCS/ProPartsUSA setup is the slightly different end link mount location on the strut. I had custom length Ground Control endlinks built for this since the Dinan end links were too long. Those will come with the setup.

Where did you get those spring perches from? I looked at ProPartsUSA and didn't see it listed.

[GJMills]

Originally Posted by Phab

For the OG M2, 275/35R18 and 295/35R18 in RE-71RS the way to go?

I’m also wondering if anyone has tried this combo. Especially a direct comparison to Falken 660 275/35/19 and 275/30/19.

[mykrrrr]

Originally Posted by Lappy

Figure I would update this post with my solution to a 100 percent legal MCS shock. You need to either cut your stock perches, or find some from a member that did the sleeved lowering kit. Once you acquire the stock perches the modifications are relatively simple, cut the bottom of the perch level, removing the endlink tab completely, and clamp it on the mcs with collars top and bottom. You can line the mcs shock where the stock perch will sit with a 12 inch inner bicycle tube to ensure a tight fit and no wiggle prior to clamping, also assures the perch is centered on the shock. Once you center and clock everything, measure from the hub to the top of the perch on your stock shock, and set the MCS to be the same. From memory this equaled about 7 and 1/4 inches on my car. Let me know if you guys have any questions.

Attachment 2779290
Attachment 2779289
Attachment 2779288

Please note, that current offerings are not legal and you can be protested if someone wants to go that route. Flipping the spring upside down is not legal, running supra perches is also not legal. Unless you want to have a spring perch made, this seems like the easiest option that retains correct orientation of the spring, includes isolators and clocks everything the same as factory. Let me know if you have any questions.

Lappy, is removing the stock perch difficult? Is it a press fit item?

[Lappy]

Originally Posted by mykrrrr

Lappy, is removing the stock perch difficult? Is it a press fit item?

You can press or hammer them off. Look up any HAS install video to get ideas of what works best for you.

[mykrrrr]

Originally Posted by Lappy

You can press or hammer them off. Look up any HAS install video to get ideas of what works best for you.

Thank you Sir.

[not.ramos]

18x10 +25 with a 275/35/18 Nitto NT01 sits nicely.

[mykrrrr]

Anyone running RT660's in on a base F87 in BS? Wondering how the compare to RE71RS's

[GJMills]

Originally Posted by mykrrrr

Anyone running RT660's in on a base F87 in BS? Wondering how the compare to RE71RS's

I did last year. They are very similar. Bridgestones are a hair quicker and have a little more grip in cooler temperatures. I had to run a different front tire size so it’s not a direct comparison.