Home › Forums › Tire , Wheel, Brake and Suspension › Bc coilovers for 2014 gts

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    • TKO MOTORSPORTS TEAM
      Member
      March 30, 2022 at 9:17 am
      Post count: 778
      #581558

      Hello Vipersupra

      10-16 KG up grade sounds like a tender spring or a very light helper spring deal they have going on ????.
      There are quite a few spring combos you can run. If your looking for ride comfort since it just a weekend car 500-600lb ( 226-272kg) frt and 900-1000lb ( 400-450kg) rear. They may also have a progressive spring option. Dont suggest running progressive springs on any performance car. If you can always use linear springs.

      Not sure what an ” optional extender” is

    • Shannon Whitehead
      Keymaster
      March 30, 2022 at 12:15 pm
      Post count: 274799
      #581568

      although i have a gen 4 i went with the swift springs upgrade and 10/12kg rates. my car will likely never see the track and only used for street driving and canyon carving. i didn’t see a need for the extender as that is used for the adjustable dampening setting on the top of the coilover

    • SRT_BluByU
      Member
      March 30, 2022 at 6:56 pm
      Post count: 1659
      #581587

      TKO MOTORSPORTS TEAM said:
      Hello Vipersupra

      10-16 KG up grade sounds like a tender spring or a very light helper spring deal they have going on ????.
      There are quite a few spring combos you can run. If your looking for ride comfort since it just a weekend car 500-600lb ( 226-272kg) frt and 900-1000lb ( 400-450kg) rear. They may also have a progressive spring option. Dont suggest running progressive springs on any performance car. If you can always use linear springs.

      Not sure what an " optional extender" is

      except for the ACR (which has loads of downforce) those spring rates are much higher than the stock Viper rates. I think the TA was more like 245lb front and 600lb rear

    • Aevus
      Member
      March 30, 2022 at 8:45 pm
      Post count: 914
      #581589

      I have (had) 12kg/mm front and 14kg/mm rear, BC racing with Swift.

      Pretty decent comfort, good compromise sportyness/street comfort.

      Decided to upgrade to more serious stuff, Penske double with 750lb/950lbs Hyperco springs but at the (probable) cost of some lost in comfort…

    • Shannon Whitehead
      Keymaster
      June 11, 2025 at 3:26 am
      Post count: 274799
      #38982

      Had a couple of questions about the spring rate options

      I am looking to buy bc coilovers with the swift spring upgrade. They have a 10,12,14,16 kg option to choose from. I don’t plan on tracking the car, it’s just a weekend vehicle. What would be the ideal spring rate for me, front and rear?

      What is their “optional extender” option?

      I searched around but didn’t see anything specific to the gen v on spring rates for my situation if the gen even matters.

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