suspension setup question

[szymonsta]

this is for dc2r:

i am running zeal function xs coilovers with 12kg/mm / 8kg/mm springs, vision front and rear camber kits with following alignment settings:
camber: 2.4deg (ront) / 1.3deg (rear)
toe: 1minute toe out on each side (front) / 10minutes toe in each side (rear)

i recently changed my settings, reduceing the front toe out from 6minutes to 1minute each side in an attempt to reduce excessive inside tyre wear.

the other thing i changed was reducing rear ride height by 3mm. before the change i was very happy with the setup of the car, handling was great. it did have a tendancy for slight light feeling at the rear when pushed too hard, and for example the back came out twice on the last track day when i entered a corner too fast, with the weight transfer off the rear wheels the back spun out. so i had been toying with the idea for a while to slightly lower the rear and my thoughts were that this would give the car a more neutral-to slight understeer feel at the limit.
so i took the car for a drive recently and found that the back still has that feeling, if not slightly more.. what is the reason for this? does the rear suspension lack stroke?

at the same time as the setting change i also got new tyres, replacing the YH ES100's with DL sport maxx's. at 1st i thought maybe the tyres were the cause but on further acquaintance the tyres seem to be of a very similar grip level to the yokohamas..

any suggestions /advice?

i think i need to wait for the weather to cool down and get used to the car again..

[freakygeek]

What tyre pressures do you use? Maybe adjust to suit driving style?

10 minutes toe in each side on the rear seems like a bit too much to me. That is quite a bit more than the Honda spec... however the additional toe-in you have should make the car more understeer-biased anyway, not more taily.

Does the rear feel like it is bottoming out? If so this could be the problem, not enough suspension stroke to handle mid-corner road imperfections maybe?

What swaybars are you running?

I like my car set up the way you describe... If the rear end is somewhat lively it's easier to drive quickly and more adjustable on the limit IMO.

[Jingers]

this is for dc2r:

i am running zeal function xs coilovers with 12kg/mm / 8kg/mm springs, vision front and rear camber kits with following alignment settings:
camber: 2.4deg (ront) / 1.3deg (rear)
toe: 1minute toe out on each side (front) / 10minutes toe in each side (rear)

i recently changed my settings, reduceing the front toe out from 6minutes to 1minute each side in an attempt to reduce excessive inside tyre wear.

the other thing i changed was reducing rear ride height by 3mm. before the change i was very happy with the setup of the car, handling was great. it did have a tendancy for slight light feeling at the rear when pushed too hard, and for example the back came out twice on the last track day when i entered a corner too fast, with the weight transfer off the rear wheels the back spun out. so i had been toying with the idea for a while to slightly lower the rear and my thoughts were that this would give the car a more neutral-to slight understeer feel at the limit.
so i took the car for a drive recently and found that the back still has that feeling, if not slightly more.. what is the reason for this? does the rear suspension lack stroke?

at the same time as the setting change i also got new tyres, replacing the YH ES100's with DL sport maxx's. at 1st i thought maybe the tyres were the cause but on further acquaintance the tyres seem to be of a very similar grip level to the yokohamas..

any suggestions /advice?

i think i need to wait for the weather to cool down and get used to the car again..

From memory your car seems quite low already? And then it was lowered more? Do you ever feel driving around the roads that the cars suspension does not settle instantly over a bump ? Ie hits a bump bounces 3 times before it stops bouncing?

[szymonsta]

in terms of the toe-in at the rear, isnt 10minutes about the same as 2mm, ie stock settings?
im running same tyre pressures as i did before, (about 250kpa?), and stock anti roll bars. rear height is only 3mm lower than before, ie very small change, barely noticeable in appearance.

actually the more i drive it the more it seems to be as good as before. i think i was being paranoid after changing the tyres and settings. i have never had any problems with bottoming out, the suspension controls really nicely, even high speed mid-corner bumps. its not a lack of suspension travel.
i think that slightly 'light' feeling at the rear is, as before, a normal behaviour associated with weight transfer under high load cornering.
yes, the more i think about it, the more i realize its just me worrying the car will behave differently, whereas in actual fact it is behaving well as before, with a great balance..