[chief1richard]

Originally Posted by PLF69

Really depends on the person and road conditions, around here roads are really awfull and particularly the ones I have to drive 3 hour straight to go to the best local track.

I am ready to sacrifice some performance on track to have a better trip experience going to and coming from events, I also hope this will encourage me to use the car more often for fun drives or evening outs. Its hard to get find the right balance and my opinion would probably be much different if I'd live in Cali or Texas...

Bought my Ohlins from 3DM Motorsports. They were very helpful in selecting my coilovers. Best part is you have a free set-up and re-valving if you decide to switch to a higher or lower spring rate. Just got my car back from alignment and believe this is the suspension this car should have come with. Went with 80F, 160 R, and has firm smooth feel at 15 clicks. This is a much better feel than OEM in my opinion. However if roads are rough in your area I would understand wanting lower rate springs. Roads around my way are fine.

[Shadowfax028]

Originally Posted by gsrbri

I have the Original F87 Ohlins set up. It's transformational and with dampers clicked to 15 or 20 (soft setting), the car is great on the street. Neutral, with no understeer (paired with -2.0 degrees camber) modified alignment (minimal toe) and corner-balanced.

what spring rates came with your kit?

[Shadowfax028]

Originally Posted by chief1richard

Bought my Ohlins from 3DM Motorsports. They were very helpful in selecting my coilovers. Best part is you have a free set-up and re-valving if you decide to switch to a higher or lower spring rate. Just got my car back from alignment and believe this is the suspension this car should have come with. Went with 80F, 160 R, and has firm smooth feel at 15 clicks. This is a much better feel than OEM in my opinion. However if roads are rough in your area I would understand wanting lower rate springs. Roads around my way are fine.

Is this your DD. or do you Autocross your car?

[chief1richard]

Originally Posted by Shadowfax028

Is this your DD. or do you Autocross your car?

I DD it but no commuting, just drive it around town. Do about 10 Track Days a year.

[gsrbri]

Originally Posted by Shadowfax028

what spring rates came with your kit?

The original 90nm/190nm

[Shadowfax028]

Originally Posted by gsrbri

The original 90nm/190nm

When I got that kit it came with 90 front 230 rear.
A little bouncy on the street. But a monster on the Autocross track!!!

[mikewills]

Damn......I’m on 80/180 @15 clicks. I’m curious about 160 rear, but definitely better than stock as it is. Install was a breeze, as well as, adjust height/preload.

[SEAT TIME RULES]

Originally Posted by mr_lab_rat

I would like to add the TC-Kline option:

They have 300/600 and 400/700NM. I'm leaning towards that hoping I would get more comfort for street driving.

I have the 400/700 TC setup on my M2C.

Ride is subjective to so many variables but with the linear springs I think its a much better ride than stock.

I've had TCK's on 2 previous M3's and I beat the hell out of both those cars on track and autox for years. No rebuilds...Konis really are awesome shocks.

If your worried about your roads then go for the 300/600...

[mike082802]

im debating 400/800 or 375/750

[LakiTopalovich]

Is the knocking sound still present on newer dampers?

[nothingman]

Originally Posted by LakiTopalovich

Is the knocking sound still present on newer dampers?

They shouldn't. They went back to the old style bushings in the MR41's which should have resolved the problem.

https://f87.bimmerpost.com/forums/sh...2&postcount=90

[usc335]

Can anyone confirm that P/N BMSMR40S1is actually the MR41?

Update (8/18/21): I finally got a reply from Ohlins via email and they confirmed that BMU MR41 and BMS MR40S1 are identical. The later kit has a UPC code for stocking dealers.

[HP Autosport]

No more spring rate options on Ohlins R&T. All new kits are 90/190 only.

[DonPedron]

I have the Öhlins with standard spring rates, at full soft I get a little car sick due to the car being slightly oversprung. Actually, car is more comfortable at 15 clicks due to the rebound being more in tune with the springs.

I have a set of 18" 513m wheels on order, doing this as a first "adjustment".

Also considering going for a lower spring rate.

[HP Autosport]

Originally Posted by DonPedron

I have the Öhlins with standard spring rates, at full soft I get a little car sick due to the car being slightly oversprung. Actually, car is more comfortable at 15 clicks due to the rebound being more in tune with the springs.

I have a set of 18" 513m wheels on order, doing this as a first "adjustment".

Also considering going for a lower spring rate.

PM us if you need help selecting spring rates.

[DonPedron]

Originally Posted by HP Autosport

PM us if you need help selecting spring rates.

Thank you for the kind offer, let's see where the 18's take me first

[chief1richard]

Originally Posted by DonPedron

I have the Öhlins with standard spring rates, at full soft I get a little car sick due to the car being slightly oversprung. Actually, car is more comfortable at 15 clicks due to the rebound being more in tune with the springs.

I have a set of 18" 513m wheels on order, doing this as a first "adjustment".

Also considering going for a lower spring rate.

I have 80 F, 160 R, and find it a perfect combination for Track and DD. Currently at 5 clicks, which is what I use at Track also.

[Poffman]

Originally Posted by DonPedron

I have the Öhlins with standard spring rates, at full soft I get a little car sick due to the car being slightly oversprung. Actually, car is more comfortable at 15 clicks due to the rebound being more in tune with the springs.

I have a set of 18" 513m wheels on order, doing this as a first "adjustment".

Also considering going for a lower spring rate.

Harold at HP Autosports (look above) helped me pick 70/140 swifts and I am incredibly happy with them.

[DonPedron]

Originally Posted by Poffman

Harold at HP Autosports (look above) helped me pick 70/140 swifts and I am incredibly happy with them.

Awesome, good to know!

[DonPedron]

Going full softie now with 60front and 120rear

Would a revalve (or any other modifications) to the shock absorber be necessary? Race shop here in Sweden will supply parts and install everything for me

[MR RIZK]

Originally Posted by DonPedron

Going full softie now with 60front and 120rear

Would a revalve (or any other modifications) to the shock absorber be necessary? Race shop here in Sweden will supply parts and install everything for me

Based on your previous message I suspect that you are trying to reduce the motion sickness feeling with lower spring rates. I personally think you maybe tackling this the wrong way and the lower rates will just mask the issue. The 6/12 or even the 7/14 setup provide very similar ride frequencies whereby the rear is a lower frequency than the front. In general this "can" provide a slight bobbing sensation on the frontend giving you the motion sickness feeling.

I would reduce the rate on the front spring only first and see where you land. I cannot comment on the valving however the general guideline that was mentioned to me years ago was to stick within 100-150lbs of the original supplied rates that the damper was valved for.

I would suspect your suspension tech will be able to provide the guidance however imo unless the valving and gas pressure in the damper can support a 6kg spring it will be too soft and the damper will not be able to control the spring.

Good luck and let us know how you go as this will help others in the same situation.

[FaRKle!]

Originally Posted by MR RIZK

I would reduce the rate on the front spring only first and see where you land. I cannot comment on the valving however the general guideline that was mentioned to me years ago was to stick within 100-150lbs of the original supplied rates that the damper was valved for.

The Ohlins dampers can take much lower front spring rates than the 513lbs/in supplied without being overdamped. IIRC you can go down into the 250lbs/in range and still not be overdamped if you turn the damping down.

The rears will be overdamped at anything under 1000lbs even on full soft.