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      07-05-2019, 12:41 AM   #25
toy4speed
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Drives: bmw m2
Join Date: Apr 2019
Location: fremont, ca

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Quote:
Originally Posted by CSBM5 View Post
Is the thinking here that the narrower the track, the higher the effective spring rate? Hence narrowing the rear track stiffens up the rear shifting resulting less understeer?
One of the means to increase the grip at one end of the car or the other is to increase the track. Wider front track has helped me decrease understeer. I would think that going to more narrow track in rear would effectively decrease rear grip (or also decrease understeer).

If I go back to the stock 19" rear wheels (et40), instead of the Apex SM-10 with a et33, the rear track would be narrower.

The other factor is a taller rear tire will increase forward rake of the car, which may to a degree also decrease understeer.
CSBM51345.00