I got the 245/40/18 tires and the mazdaspeed springs and shocks, but some hard corners i will rub my front tires,,,so i want to go more nagative camber on the front, i did - 1.4 on the front already, but still rub the tire sometimes,anyone knows how much we can go for having no camber kit?
ps, i did the most caster i can get already, almost 6.0 caster.is like 5.8 now

 

Increasing the camber is not going to make up for getting the incorrect offset for your wheels.
When you corner, the camber dials back out again.
You should see about .6° to 1° up front and 1.2° to 1.5° in the rear. 2° max out back.
You are just going to burn up the tires two ways instead of just one with more camber than that.

 

I'm running -3 degrees all the way around, eats up the tires on the inside but I get them very cheap. what size and offset are you wheels?

 

Unless your running r-comps...you don't want anywhere near that camber...(or unless your drifting)

It is difficult to get that much anyway unless the car is so low the steering geometry is all screwed

 

I got that alignment when I had V700's installed the last time I went to the track. now I have 275's in the back on an 18x9.5+37 and If I took any camber out the tires would rub. The V700's were 255/45 I believe and I had them on a 17x8+32 in the front w/ a 25mm H&R spacer installed, I had to run that much negative camber to prevent rubbing and it was very very very close.