krs
Autocross Champion
- Location
- Las Vegas, NV
- Car(s)
- MKVIIS R
I'm getting into some territory of topics that I lack the knowledge on.
I'm running the Bilstein B16 Damptronic coil overs on my R, (among other things). These last to autox events I noticed I'm getting some tire rub on the fender lip of the rear wheel wells. For this season I'm on 18x9 ET42 wheels, with 255/35 RT660's. Last year I didn't have the issue with the 18x8.5's. The rear camber is right at -1.9° on both sides.
I'm looking for the best bang for the buck fix on this. I'm really not ready to pull the B16's out, and go down the path of a better coilover/rates setup for autox. I will at the end of their life cycle, but that's not now.
Any thoughts?
I'm running the Bilstein B16 Damptronic coil overs on my R, (among other things). These last to autox events I noticed I'm getting some tire rub on the fender lip of the rear wheel wells. For this season I'm on 18x9 ET42 wheels, with 255/35 RT660's. Last year I didn't have the issue with the 18x8.5's. The rear camber is right at -1.9° on both sides.
I'm looking for the best bang for the buck fix on this. I'm really not ready to pull the B16's out, and go down the path of a better coilover/rates setup for autox. I will at the end of their life cycle, but that's not now.
- For those that know, is there a general rear camber setting that is best not to go past? I thought I had read about -2.0° is it. If I bought camber arms and went to -2.5° is this territory that I should stay away from? I'm not savvy on the the rear suspension dynamics to truly know how this is affected.
- I know the B16 DCC spring rates are on the softer side. Is it possible to find a better rate to help mitigate this?
metric (imperial) | Front | Rear |
Spring Rate | 6.6 kg/mm (371 lb/in) | 5.4 kg/mm (303 lb/in) |
Top ID | 88-90 mm (3.46 - 3.54 in) | 61-61.7 mm (2.40 - 2.43 in) |
Bottom ID | 71-71.6 mm (2.8 - 2.82 in) | 55-56.1 mm (2.17 - 2.21 in) |
Middle OD | 145 mm (5.71 in) | 121 mm (4.76 in) |
Wire Diameter | 13.25 mm (0.52 in) | 13 mm (0.51 in) |
Overall Length | 215 mm (8.46 in) | 215 mm (8.45 in) |
- Size down on tires? These tires are pretty new, with only maybe 20 runs on them. I hate to ditch them so early in their cycle.
- Raise the car up? I'm not sure at what height I'd need to go to prevent the rubbing under compression.
Any thoughts?