CTR autocross: mis-match treadwear front to back?

[FifStreet]

Has anybody tried mismatching their CTR tread wear front to back? More specifically putting a high treadwear rating tire on the rear to artificially induce some oversteer?

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[RacingManiac]

Not sure why you would want it necessarily, there are better way to induce that behavior anyway. It also introduce an element that won't be easily tuned unless you just have multiple sets of tires to swap.

 

[FifStreet]

Not sure why you would want it necessarily, there are better way to induce that behavior anyway. It also introduce an element that won't be easily tuned unless you just have multiple sets of tires to swap.

What are those better ways?

 

[RacingManiac]

Bigger rear bar(adjustable), is what I would suggest as the most tuneable. You can also play with tire(narrower rear tire) but that is the same issue with TW rating stagger but at least tire behavior will be very similar(I can tell you running 275/245 stagger on STOCK rear bar is pretty loose). You can also play with rear alignment(less toe-in)

 

[destoups]

We ran a Hoosiers/all-seasons combo once on a Mazdaspeed Protege that was a hoot but gave up so much grip in steady state cornering ...

This is the tuning order most folks try, as @RacingManiac points out:
tire pressures
alignment
rear bar
shocks
stagger
(then, maybe, different compounds)

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