[jonathanvictory]

Hi. This is mainly in regards to autocross with an occasional road course. Within the factory range, is it possible to get a good enough negative camber for autocross without having to swap or upgrade hardware? My friend is going to help me out at his alignment shop so I figured I'd take the offer.

If this is possible, what numbers should I have him try to dial my alignment to? Thanks.

[FaRKle!]

Originally Posted by jonathanvictory

Within the factory range, is it possible to get a good enough negative camber for autocross without having to swap or upgrade hardware?

This isn't possible on the front (there's no adjustability built in). In the rear there's lots of adjustability, but it's not that helpful without the front. For the front you can get camber plates or eccentric bushings for the LCAs. No HW swap is required for the rear.

[jonathanvictory]

Originally Posted by FaRKle!

This isn't possible on the front (there's no adjustability built in). In the rear there's lots of adjustability, but it's not that helpful without the front. For the front you can get camber plates or eccentric bushings for the LCAs. No HW swap is required for the rear.

Thanks! I've watched a lot of your vids and read lots of your posts, can you suggest the best inexpensive solution then for the front? For the rear though, what number(s) would you recommend? Looking for a nice balance, but more towards grip. I'm on H&R Sport springs all around and a Turner front strut bar. Tires are MPS4S. Thanks.

[brigade24]

No is the short answer to your question. When I ran in stock class, the best I could do up front was -0.8 degrees of camber. rear camber was not a problem, you can easily get -2 degrees in the back.

what size of tire do you plan on running? PS4S is a good tire but it will not heat up fast enough for autox...not even in Cali! You can still use them and have fun but it won't be the quickest.

The wider tire you run the less camber you will need. just to give you a base line, I typically run my car in STU (Street Touring Ultra in SCCA classing) and for autox i am around -2.3 in the back and -2.9 up front. That's only using camber plates up front. The car is on a 265 wide tire in all corners. I'm lowered about an inch and judging by feel -2.9 is not enough for the front and -2.3 is too much for the rear. Bare in mind that i'm xdrive with an inline 6 so my battle with weight management and traction is a bit of a challenge when aiming to remain in my class.

Having said all that, you are in a lighter RWD car that has AFAIK better balance and weight management characteristics than the 335 xdrive so you may not require as much camber.

I would recommend camber plates for front camber. That in my experience is the easiest way to achieve camber effectively and most of them will get you between -2.5 and -3 degrees. I've tried the offset KMAC bushings in the control arms and they work well but they are more challenging to adjust between autox runs because you have to remove the wheel to get tools in there etc. it is somewhat inconvenient.

[jonathanvictory]

Originally Posted by brigade24

No is the short answer to your question. When I ran in stock class, the best I could do up front was -0.8 degrees of camber. rear camber was not a problem, you can easily get -2 degrees in the back.

what size of tire do you plan on running? PS4S is a good tire but it will not heat up fast enough for autox...not even in Cali! You can still use them and have fun but it won't be the quickest.

The wider tire you run the less camber you will need. just to give you a base line, I typically run my car in STU (Street Touring Ultra in SCCA classing) and for autox i am around -2.3 in the back and -2.9 up front. That's only using camber plates up front. The car is on a 265 wide tire in all corners. I'm lowered about an inch and judging by feel -2.9 is not enough for the front and -2.3 is too much for the rear. Bare in mind that i'm xdrive with an inline 6 so my battle with weight management and traction is a bit of a challenge when aiming to remain in my class.

Having said all that, you are in a lighter RWD car that has AFAIK better balance and weight management characteristics than the 335 xdrive so you may not require as much camber.

I would recommend camber plates for front camber. That in my experience is the easiest way to achieve camber effectively and most of them will get you between -2.5 and -3 degrees. I've tried the offset KMAC bushings in the control arms and they work well but they are more challenging to adjust between autox runs because you have to remove the wheel to get tools in there etc. it is somewhat inconvenient.

Thanks for the great info. My tire size is 255/35r18. Soon my PS4S will be done and will be looking into treadwear between 100-200.

I just bought TC Kline front camber plates off a forum member today to help with front adjustment.

[FaRKle!]

Originally Posted by jonathanvictory

Thanks! I've watched a lot of your vids and read lots of your posts, can you suggest the best inexpensive solution then for the front? For the rear though, what number(s) would you recommend? Looking for a nice balance, but more towards grip. I'm on H&R Sport springs all around and a Turner front strut bar. Tires are MPS4S. Thanks.

Camber plates are your best bet.

As for alignment numbers, try somewhere in the range of -2.5 to -3deg camber, 8deg of caster (if you can), 0.03deg toe in each side for the fronts. For the rears start with -1.8 to -2deg camber, and 0.05 to 0.08deg toe in each side.

[jonathanvictory]

Originally Posted by FaRKle!

Camber plates are your best bet.

As for alignment numbers, try somewhere in the range of -2.5 to -3deg camber, 8deg of caster (if you can), 0.03deg toe in each side for the fronts. For the rears start with -1.8 to -2deg camber, and 0.05 to 0.08deg toe in each side.

Awesome! I'll give those a shot once I get the front camber plates on in the coming weeks. Thanks again!

[brigade24]

Originally Posted by jonathanvictory

Thanks for the great info. My tire size is 255/35r18. Soon my PS4S will be done and will be looking into treadwear between 100-200.

I just bought TC Kline front camber plates off a forum member today to help with front adjustment.

You're welcome! that's a good size. It will be more fun when you step into the < 200 tread wear tires.

Enjoy!!