I have new TOYO TS-1 tires and they seem to be producing a lot of oversteer when power is applied on a turn.
Is this due to the tires or does the wheel geometry need to be adjusted with more neg rear toe?
I have rear total toe of -0.7 mm.




[Edited by Peter Kamen on 01-20-2001 at 12:51 AM]

 

Rear toe should be in by 6 mm, not 0.6 mm. That has a lot to do with it. The rest is your tires (mostly), differential, and driving.

 

[QUOTE]Originally posted by Peter Kamen
[B]I have new TOYO TS-1 tires and they seem to be producing a lot of oversteer when power is applied on a turn.
Is this due to the tires or does the wheel geometry need to be adjusted with more neg rear toe?
I have rear total toe of -0.7 mm.

 

6 mm rear toe in.

 

Peter, what size are your tyres?

A lot of people here believe that the grip bias between rear and front is much higher with the stock S02 than with most (if not all) other tyres brands of the same size specs.

If that is correct, going with other tyre brands of the same size will make the car substantially looser. You must compensate either by wider tyres at the rear or some other suspension measure (stiffer front shocks and springs, stiffer front anti roll bar, more camber at the rear, etc). You are however entering uncharted waters and a lot of testing will be needed to come up with a setup that will please you.

 

Hi Cardyn, so you went with the Toyos eh! I spent a lot of time researching the various tyre options and came to the conclusion that anything other than the standard S02 is going to cause a reduction in grip and will require major experimentation (as Luis is alluding to above) in order to get the performance back to how it was with the original tyres (never mind an improvement).

The OEM S02 for the S2K is not a standard S02 - it is especially designed for the S2K and has different tread patterns and tread width to other S02s - it is a wider tyre at the rear than the 225 rating would suggest. Here in Oz (and I'm pretty sure everywhere else around the world too) OEM S02s are available (I confirmed this at the Bridgestone warehouse in Altona) at around A$300 a tyre. My suggestion is that you either do the best you can playing around with toe-in etc. until you wear out the Toyos or ditch them now and buy OEM S02s.

 

[QUOTE]Originally posted by Luis
[B]Peter, what size are your tyres?

 

I just did my alignment today.
The Hunter equipment can only take input settings in degree (

 

Asin: where in town did you get your S2K aligned? Are you happy with the job, did they properly translate MM to degrees?

-Jeff
(austin, tx)