I am going to be setting up my SE with my Ground Control Camber/Caster plates. I am wondering how much neg. camber to have if I am running 13x8 wheels with 235/45R13 tires. Do you use less -camber with wider tires? THis is an auto-x only car so it doesn't have to be optimal for the street, just auto-x, and track...

 

camber doesn't matter with tire width. it depends on use of the car. since yours is an autox car i'd start with around 1.5 degrees of camber and then dial it in from there.

 

Not entirely true... wider, lower aspect ratio tires have less tolerance for excessive negative camber.

But yeah, it does depend on the car... better dig out the tire pyrometer and do some testing

 

less tolerance to straightline performance due to lifting the outer edges, but take a look at a racing 911's front camber. its massive with the only half the inside tire touching (when its on the ground ). they don't flex very well but i doubt he'll be setting the camber 3+ degrees. all depends on which traction is needed and how to split it.

 

Also I'm going to have 300lb springs on the front with the ground control coil over kit, and Tokico 5 shocks. I am thinking the heavy/stiff springs will make the front nice and tight so maybe i can get buy with only 1.5 to 2 degrees max of negative camber.

 

I have been told to start with 2 degrees negative and go from there. I have been trying to dial in my car as well. Some tires can do better with more or less, you will want to contact your tire manufacture. I understand that Hoosiers can be quirky around this. And, Peejay is right, pull out the tire pyrometer and check the temps after you run.

 

Can you give me a recomendation on a good pyrometer that wont break the bank. I've never used one before, but i think i better start now that i am using r-compound tires. Damm the treadwear on the Kumhos are 50. I better make them last.

 

Hey Spinner,
I sell the Raytek infrared pyrometers! With laser $99, without laser $79. This is the little hand held unit that looks like a gun. It will read in deg F. or C.

 

i heard 2.5 degrees from a guy using the same tires and springs. he did quite a bit of pyro testing too