Rca With 30 Mm Track Increase

July 31, 2004

Hi guys

AE86 / KE70 / similar cars

I would like to ask those who have installed RCA with track increase, or some times known as built-in negative camber about matching it with the rear.

Well, my car had ideal front track and rear track. Nearly 100% same. Since the upgrade to 195/50R15 from the 175/70R13 there was no desire to increase the track.

However, recently I just acquired a "proper" RCA and it had built-in negative camber by means of shifting the strut position outwards by a certain amount. In this case 30 mm.

The replacement of this new RCA over the old one gave quieter ride, firmer feel and control, overall safer and more confident. All good ............... but ............. the track increased so much that the tyres are scratching the fender tops, inner guards right on the foot etc.

Whacking them fenders solved the problems, but the rear track is so much smaller that the car tends to oversteer and it doesn't look nice at all having the front so much wider than the rear.

For those who is using RCA with 30mm or 40mm track increase, what do you do / did to solve the oversteering problem as well as looks?

many thanks in advance.

August 3, 2004

Alrite bud! I fitted them on my '86 and the handling is awesome now!

Why would you want to cure the over steer!? Just plant your foot some more and give it a load of opposite lock! Drifting is the best sensation you can have on 4 wheels! ;)

I had the problem with rubbing but all i did was remove the w/arch liners and bend the little tabs backward on the wing!(tabs that the w/arch liners attach to!)

There is no reason you have to match the track with the rear cuz it dosnt alter the handling much at all! But all i done for looks was to have a wider wheel and tyre on the back than the front! :D ;)

August 4, 2004

yesterday changed tyres to dunlop FM901 195/50R15 82v $RM$ 165 each

Tooked the opporunity to changed the rear lugs to long ones so that I can use 2 7mm+ spacer on each side to match the rear tracks as close to the front as possible.

When done - front and rear is nearly same - difficult to say which is more or less :)

Strange - only 15 mm rear spacing and equals the front. I thought my front was increased by 30 mm on each side. May be I was wrong.

Anyway, after matching the tracks - there is still oversteer ..... completely different from the previous 75% neutral 25% over

Now it's around 50% neutral 50% over

The body roll has reduced. This is probably thanks to reducing the overall height by changing the previous 60 series back down to 50.

The matching of the tracks - also seems to have help balanced the front and rear stabilizer bars to work in unison....

Strange ....... if there's such thing / assumptions .... ???

Also set front camber -2.2 castor +0.5 toe 0

Rear camber is screwed -0.1 left +0.2 right - can be seen by the naked eyes :( - left toe in a little, no toe in at right.

The tyres are - soft - running on 41 psi hot and feels dam comfortable on 4.4 kg/mm front & 3.3 kg/mm rear on TiTAN coilovers.

August 4, 2004

Hi trueno

My skills are not up to the level yet - unfortunately - kinda scared of oversteer - prefer understeer as newbie - infact neutral now...

But just took the car out for a ride - starting to get used to this :) we'll see how it goes...

August 4, 2004

Sounds like youve got someting bent on the rear mate! to have different camber!?? Have you got a solid axle or independent rear suspension!? Not very clued up on the KE70!?

No wonder you have got an uncomfortable ride with 41 PSI in the tyres! That would also cause massive oversteer!

I run 25 psi in my yokohamas which then raise to 30 psi after ive been on the track! (due to the heat!!)