I do know the 16k front and 6k rear isn’t balanced at all for the street....probably out of the box drift setup. Would definately order a higher spring rate for the rear and for sure. A friend and myself were thinking about doing aircups on these since they fit the requirement on depth and diameter. Too bad you’re in Cali....I’d take you up on your offer.
BC Racing Coilovers
- Thread starter Payjack
- Start date
P3D-R
Member
Last I spoke to them they had changed the spring rates from 16/6. Honestly those rates don't make much sense to us in regards to wheel rates. The wheel rates/frequencies don't match front to rear so most of the Taiwan/Chinese setups concern me. I'm also not a fan of cups. I've had them before. They can be loud and clunky. In addition to that the cup will only lift as much as the static weight of the vehicle compresses the spring. With 16kg up front that might not generate much lift. In addition to that when the cups aren't filled it's possible the springs will be loose and make noise. I ended up adding helper springs to my setup on my other cars so that we can keep them positioned correctly at all times.
This is good information. Thank you. It looks like only fortuneauto (ALS) makes one more cohesive as that is one unit and not an “add on”. Other than that you can pay the premium on KW and their HLS.
P3D-R
Member
Front rate seems fine but rear doesn't. It's not just about that. You have to look at the lengths of the shock bodies in conjunction with the stroke offered. I wish it was just as simple as rates.
Thanks for the info. I’m undecided on whether to go Coilovers or springs. I’m trying to budget. I think I’m going to end up with springs since I’m not ready to take the plunge for a set of MPPs. Still can’t decide on Eibach or H&R if I do
Rethinking about this a little more...bc the shocks are height adjustable in the body that would mean a reduction of oil volume inside since there is a hollow cavity underneath which. So from what I can visually see:
Pros: modular. Height adjustable with full stroke at non compressed height.
Cons: Less total oil volume, possible chatter at sleeved connection
P3D-R
Member
We have had great results with Eibach. I can't comment on HR but we tend to see their springs sag sooner than the others.
Thanks for the feedback. My only concern with the Eibach set is the 1.4 drop in the back compared to the H&Rs 1.2 all around
P3D-R
Member
Couple of notes, the UP damping adjustable shocks are designed to be of fixed height. You can put aftermarket springs on them but the dampers themselves are not intended to be height adjustable. This damper was produced to fill a void for the SS class of SCCA Solo 2 afaik.
In addition to setting up these independent ride height and spring preload type of coilovers you need to take into account critical shock lengths, bump vs droop, etc.... It's not as simple as saying you have 4" of bump and can adjust the height at the lower bracket. Now the rear damper gets even more complicated because if the damper length isn't set correctly, considering it's divorced from the spring, you can end up with a lot of issues. This is why most euro companies like KW have fixed damper lengths. It takes all of that potential problems out of the equation. I too was sold by the fact that you can retain all your bump and still be very low but in all reality droop is so important to your ride quality not to mention rebound valving curves. With that said on the Teslas the shock lengths should be set to a specific measurement and if further ride height adjustments need to be made it should be done at the spring. The way the spring rates appear on the BC's you might need helper springs up there to obtain some droop. All this will be accounted for when I begin custom spec'ing some BC's to help those who need a real budget monotube single adjustable coilover.
P3D-R
Member
This hasn't been an issue for us and does baffle me as well. We have looked at several P3D's and compared them to LR AWD without any issues. I have also measured all the part #'s and compared them. It's really interesting why Eibach made the P3D have a shoter rear spring than the LR AWD. Spring rates are identical. Either way H&R probably won't stay at 1.2 for very long. I see them sag as mentioned before. Eibach seems true to their specs from my experience. We also follow the procedure to trim the bumpstops and have found promising results in doing what Eibach mandates. I know some say it's pointless but in our testing it has made a difference.
MODEL+
Vendor
Currently on MPP. But I'm open to testing these custom BC Racing if you make them for SR+ RWD models.
P3D-R
Member
You have MPP comforts? That's a great product for the price. Why would you switch?
MODEL+
Vendor
Correct I am currently on MPP comforts. Due to the lack of options available on the market right now for this platform, I want to test out and gain perspective on whats out there and maybe throw in my input or two. I'm working on curating a well informed knowledge base for the Tesla aftermarket. Are you suggesting that these BC may already be an inferior product compared to MPPs? lol
P3D-R
Member
That is not what I'm implying. I just didn't understand why you would remove the non adjustable MPP comforts. The only way to build a custom suspension is to understand your needs and build them accordingly. With that said I'd have you fill out a "questionaire" so we can spec something for your purposes. LMK if you have a shop or something and I'll work on getting you all dialed in.
MODEL+
Vendor
Thanks all for the advice. After all this I think I’m just going to go with the eibachs. The whole pro kit is on sale for $500 right now and includes front and rear sway bars. I really haven’t found any bad reviews except people who don’t like the low rear look. Since I’m mostly looking for looks and a little weekend performance at the canyons I think they will be fine.
