997 lowered suspension camber & toe set up?

[Bagso]

Any one got advice on suggested set up for a 25mm lowered C4s 2005. I am running on 20" wheels and it's pretty tight in there, from what I can see I may need to change the control arms to get the right level of adjustment. The current set up too agressive and is chewing through the inside edge of rears in about 2500 miles and is a bit like a Weasel on acid on the bumpy country lanes.

[mollytherocker]

What are you trying to achieve?

MTR

[sportsandclassic]

Hi,

At 25mm drop you will struggle to get a reasonale camber/toe setup on the rear. What are the figures at the minute?

For a road car It would need to be around 1.5 degrees negative camber and 10 minutes toe in per wheel.

Mike

[jsb]

mollytherocker said:

What are you trying to achieve?

MTR

Sounds like a lack of fillings!

[MrC986]

Bagso wants his rear tyres to last more than 3k miles at a time

[betternotbigger]

Get some smaller wheels. End of problem.

[Bagso]

Not sure of exact settings currently, it does the same on the my 19" wheels - chews the inside. I believe the back is running at -3 deg & the front -1 camber, no idea on the toe. what I guess I need to know is can I dial out a bit of camber & toe on the rears to get better wear on Tyres and make it a bit less jumpy on the back roads, or am I going to need to change a few bits to achieve this?

[sportsandclassic]

Hi, well theres the problem -3 degrees camber on rear will drive the car from rear and wear the inner edge quickly on road going cars. It is probaly set like that to get the toe setting as close as possible due to the lowering springs.

[Bagso]

Tx Mike, I suspected as much. It is only the rears that are an issue.
You reckon 1.5 neg camber is standard or a reasonable max to run on the streets? I am reasonably happy with the set up if I didn't have to shell out £600 notes on Tyres so often 2500 per set is a bit much eh.
Any suggestions on a product to give me the extra flexibility?
Chris

[sportsandclassic]

Hi,

The problem is that the car is too low. If you alter the camber back out then chances are the tyres will hit the arches. I would get a different setup. If you stick with this setup you will need some motorsport rear track control arms around £650 and i would install some lower control arms off a gt3 but they will need machining at the split section to make them shorter and then you can add shims to get the cambers correct. Its the only way really to get results. The control arms are around £220.00 each plus the vat plus machining around £80.00.

You may still need to have arches rolled on rear too.

Mike

[Bagso]

The arches are already rolled, the rest seems a lot to do. Reckon I should get the current set up properly checked for any room to manoeuvre first.