How to dial in more oversteer?

[bmcquill]

Justice Pete has a good alignment thread on here. He said decreasing negative camber in the rear also helps, in addition to increasing it in the front. I had an alignment done according to his specs last summer and I personally didn't notice much of a difference on the autocross course, but that was with a staggered setup and stock sway bars... might be noticeable with square tires and sways.

[Matty Ice]

You won't be able to fix it with tire pressure. That is just used to fine tune track/driving conditions. To get good handling you will need a 1le front bar. The 1le bar is plenty stiff to keep your body roll to a minimum.

[VR Baron]

Originally Posted by mikeman

It sure can get kind of confusing with the adjustable ones. For me, at least. lol! Right now, I basically have a 2 mm bias due to the rear bar being on the third setting. I'm currently running square setup with stock rims and tires.

If 5 mm or so is the magic number for almost perfect balance, then all I have to do is gain a mere 2 mm somewhere. Of course, I realize it's more than just pure numbers and there is a lot more at play here.

I thought about varying the front to rear tire pressures. It seems from what I've read about the subject in the autocross forums, increasing the front tire pressure relative to the rear will decrease understeer and provide more grip for the front end.

However, I don't know what tire pressures to begin at to notice a difference in handling. 28 psi front vs 35 psi rear? 32 psi front vs 35 psi rear? Ultimately, I guess I will have to experiment to see what the car likes best.

Best I can tell you really only have about 1mm difference based on Hotchkiss data. Tire psi will only help in minor fine tuning. For less understeer you increase the rear psi to be more then the front. Mor front psi can help with turn in.

[mikeman]

Originally Posted by Matty Ice

You won't be able to fix it with tire pressure. That is just used to fine tune track/driving conditions. To get good handling you will need a 1le front bar. The 1le bar is plenty stiff to keep your body roll to a minimum.

I thought the 27mm 1LE front bar was solid. If it is, wouldn't that be equivalent to a 32mm hollow bar like the Hotchkis?

[mikeman]

Originally Posted by VR Baron

Best I can tell you really only have about 1mm difference based on Hotchkiss data. Tire psi will only help in minor fine tuning. For less understeer you increase the rear psi to be more then the front. Mor front psi can help with turn in.

Thanks. Some sites online say to increase it, then others say to decrease it for less understeer. It can get very confusing. Since it's basically free, I'll try the increased rear tire pressure over the front to see if that helps any.

Ultimately though, I know I will have to eventually replace the big Hotchkis front bar with a smaller bar to regain that front to rear sway bar balance Justice Pete talked about.

[VR Baron]

Originally Posted by mikeman

I thought the 27mm 1LE front bar was solid. If it is, wouldn't that be equivalent to a 32mm hollow bar like the Hotchkis?

Best I can tell, again Hotchkiss data, the front 32 mm hollow is like a 29 solid

[VR Baron]

Originally Posted by mikeman

Thanks. Some sites online say to increase it, then others say to decrease it for less understeer. It can get very confusing. Since it's basically free, I'll try the increased rear tire pressure over the front to see if that helps any.

Ultimately though, I know I will have to eventually replace the big Hotchkis front bar with a smaller bar to regain that front to rear sway bar balance Justice Pete talked about.