Hi Alfabb community,
I'm wondering what caster / camber and toe setup I should be running for Auto-X? I'm 'eating up' my tyres fairly quickly so any ideas would be much appreciated!
Currently on BFGoodrich G-force comp 2 - I've considered getting some really sticky Hoosier's too just haven't pulled the trigger yet. I've also thought of getting some wheel spacers for the back wheels yet unsure how large the spacers should be (5mm, 10mm?). I have approx 19mm of gap from the top of my tire to the inside ledge of the fender. Would playing with camber/caster/and toe affect this? It seems that I should be definitely be having more than -2.0 camber and a large amount of caster (any ballpark ideas to start with?) in complements to a slight bit of tow-in.It depends on what tires you are running. Tire Rack https://www.tirerack.com has manufacturer recommendations for some high performance tires (ex: Hoosier A7: 3 degrees negative camber). Caster can provide additional negative camber on the outside tire when cornering, but can be over done and result in the tire contact patch moving to the inside of the tire and the outside loosing grip. Especially for very wide tires, ask me how I know. For serious work, consider buying and using a tire pyrometer.
There are other suspension modifications available but this depends on what class & preparation rules you need to follow.
... It seems that I should be definitely be having more than -2.0 camber and a large amount of caster (any ballpark ideas to start with?) in complements to a slight bit of tow-in......
I was about to ask this - I thought I read that some use neutral or a hair of toe-OUT. Makes it twitchier and faster reaction to steering input. Then when I read toe-in above I wondered if that was wives tale. The self-centering is interesting to hear.Another side effect of lots of caster is really strong centering steering. On my car I can let loose of the wheel and the wheels will point straight ahead faster than I can move my hands. Of course, it's also harder to turn; turning the wheel raises the front while the weight wants to make the wheels point straight.
I occasionally use the steering wheel release to counter a little oversteer. And, some serous autocrossers run some toe out. Good for turn in, but darty on the street.
If I add as much caster as possible will this ruin and have some wear and tear my front bushings? I've had to replace 2 sets of bushings from Centerline now in under a year and a half and I'm curious if the caster/camber layout has any effect on this?Back when I ran a mostly stock '71 Spider, a friend suggested adding as much caster as possible, as also suggested by Eric Wood. This can be done by lengthening the upper front locating arm until it's inner end just touches the outer edge of the recessed mounting "box". When I did this, it increased the...