Quote:
Originally Posted by CSG David
On a side note, autocross guys stuff a lot of tire because in the end, grip is grip, so more tire helps give you as much possible grip you can get on your car for the autocross course. The speeds are not fast enough to cause you to slow down. On large tracks, too much tire on a particular car can actually scrub off speed in your corner, reduce the speed on the straights, etc. This is why some guys running 255s on the BRZ/FRS are not running any faster than guys with the 215 size tires. Now if the car was turbo'd, then 255s are the faster way to go...:p
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Yep. Whatever is flawed or theoretically bad about my putting a 245 on a 7 doesn't seem to be causing me active harm. It's not a silver bullet, either, though.
The bolded is why I do it. Stock/Street doesn't give you a lot of knobs to adjust, so you do what's available. Doesn't matter if it feels bad or is a bass-ackwards methodology. It absolutely might not work for some folks' driving styles. In the end, use the scoreboard as your measure.
As a practical matter, it also lets me get away with some dumber/more aggressive tactics. Brake later without fear of abs intervention, get back on the gas sooner without wagging the tail so much, it's more material to heat up, so it's harder to overcook them (also harder to get heat into them...).