Suspension Setup

[rotorwings]

Factory Built R300D SV 15" (195/45 R15 x 4) Road-only Car.

I have an appointment with a workshop later this week and would like some advice on suspension geometry setup.

In general I am very happy with how the current setup, but I have limited experience with different cars, so I might be missing something.
There are two minor 'issues' I have:
- Uneven tyre wear on the front (insides wearing out significantly faster than the outsides).
- Some amount of 'tram lining' on uneven roads.

I want the car to be as 'lively' as sensible for the road and have good turn-in, but perhaps I should:
- Reduce the negative camber a little?
- Reduce any front toe-out (if it exists)? Perhaps go to 0 toe-in/out?

Any thoughts, numbers and idea would be greatly appreciated.
A good set of numbers for a lively road setup would be great if they are available somewhere.

Edited by rotorwings on Monday 16th March 16:51

[sjmmarsh]

It sounds like it has a set up that is track oriented as it sounds like it has positive camber and some toe out on it (as you have worked out). If set up correctly this will improve turn in and cornering grip, but you will get uneven wear and some tram liining.

You could try out zero toe - any more than that would give you more under steer. From memory you should have 0-20' toe out and 1.5-2 degree camber. Any more than these and it is probably too aggressive for regular road use.

Steve

[BritishRacinGrin]

20 minutes toe-out is what I used to run on my race car. For road use I would set it up parallel or in all probability dial in a little toe-in to improve the center feel and reduce the fidgetyness.

Camber will depend on what sort of tyres you run? but as above I think for List 1b tyres 2 deg is a sensible maximum for road use assuming you have 55+ profile tyres.