Tamago's guide to ultimate yaris handling

[Loren]

Wider track usually means more grip (for various reasons). So, widening the track in the rear would make the rear stick better. Not really what most of us are fighting for, with a FWD car, you want more grip in the front.

The rear hub spacers are purely a cosmetic mod. (not to be confused with alignment shims)

[kngrsll]

Originally Posted by Loren

Wider track usually means more grip (for various reasons). So, widening the track in the rear would make the rear stick better. Not really what most of us are fighting for, with a FWD car, you want more grip in the front.

The rear hub spacers are purely a cosmetic mod. (not to be confused with alignment shims)

ah, thats right... i remember a friend of mine use to use them on the front when he would autox (SE-R, fwd).

im still working on this shocks thing, i have to turn in a research proposal this week and its consuming all my time! :(

[Tamago]

Originally Posted by Loren

Wider track usually means more grip (for various reasons). So, widening the track in the rear would make the rear stick better. Not really what most of us are fighting for, with a FWD car, you want more grip in the front.

The rear hub spacers are purely a cosmetic mod. (not to be confused with alignment shims)

Originally Posted by kngrsll

so we ran a track day with the spacers installed. although there was rubbing on the streets, with the spare and other junk removed, there was no longer any rubbing. If you remove a little weight, you can get away with the 15x7 +10.

The really important thing is how the car drove. My co-driver and i did 2 sessions a piece. He has driven the car at ever event that i have, so his feed back is just as valuable. The spacers had a noticeable increase in rear stability. It made it a little easier to carry speed into the corner without the rear wanting to chase you, so turn-in speeds may have been a little faster. What was more important was stability increased the "trust" in the car in the corner. As you may know, if you feel confident about the car, you will be able to drive it well.

Since I needed to remove the spacers for street use, i pulled them off before the last session. The rear end felt a little more unstable (duh) and if you gave the same inputs as before, the back end would tend to slide a little more. That may be good for autox, but not for the track. As easy as the are to take on and off, i may swap them on depending on the type of course. Tight courses may favor the spacers out, while the more open courses (like the one we were one) would be better with the rear spacers in.

All in all, i think they helped with the stability of the car. If i were not running such low offsets, i would continue to use them. If you have anthing more than a 35 mm offset, they are a no brainer, they easily fit and increase rear stability. The 10 mm should put the track in the front and rear dead even, while the 13 mm spacers may make the rear track greater than the front.

Great mod, track approved :)

taken from : http://www.yarisworld.com/forums/sho...71&postcount=6