Quote:
Originally Posted by runnerx
My best lap of the day w/ a passenger. laptime -- 2:14.35
06 Z4M roadster
Stock except...
Ferodo DS2500 pads
ATE superblue racing fluid
Star Spec 245/275 (39/38 hot)
camber pins pulled
I think I can improve the time a little more:
1) 2nd gear at T11 but heel-toe into 2nd is really pain in the butt.
2) better arch at T14-15
3) 2nd gear over T5 (???)
4) lighter braking or maybe just lift-turn-throttle at T8 (I always run out of guts here. I spun once at ~110mph right here)
5) need more guts and stiffer right foot on the throttle over T9. I keep missing the outer berm next to the big gutter. The cure is to carry more speed and it will push me there.
Please feel free to give your input... 
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Well, compared to my run it looks pretty darn good! Thanks for posting--it helps to see things from a more advanced driver's point of view--helpful!
RE: 5a, I found
PCA's driving guide to Thunderhill after we'd been to the track--nuts! It recommends 2nd, but as it says you pretty much have to get into 3rd "mid air"
for it to be effective. I tried 2nd a couple of times into this turn and my noob brain couldn't deal with the amount of data to cope with over the top of that corner w/o losing a lot of speed (i.e., I didn't get into 3rd "mid air"
). I settled for 3rd and focused on my braking, line, and throttle.
Things got a bit squirmy for me in 8 too a couple of times in both cars. I ended up braking lightly but thought I was just being gutless (or is that "cautious"
).
Guide seems to have some suggestions there that are in line with your ideas...and some ideas for 9 as well. I don't know if it's useful for a more skilled driver, but I plan to try and follow some of the ideas out for specific sections next time out as part of a planned strategy. Can't hurt I'd guess.