[quote name='flash' date='Feb 17 2006, 11:43 AM']a cab will limit your ability to do events, in most areas, if you don't have a roll bar of some sort - rules are getting more strict every year - there are solutions to that though
you may find that a tip may not be as fun for you, but there are those who regularly run tips in such events, and love it - chris lennon is a good example - i believe he's been doing it for a long time - i would talk with him and get his insights and thoughts
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I've run tip 968s in autocrosses and DEs, and there are definitely pluses and minuses.
Pluses:
- shifting at full throttle
- never missing a shift
- no chance of picking the wrong gear
- hands on the wheel more of the time (all the time if you choose full auto)
Minuses:
- extra weight
- only 4 speeds versus 6
- computer overriding you (not letting you downshift when you might want to, and just as bad, upshifting at the same moment you upshift, resulting in the dreaded 1st to 3rd shift). For this reason, I typically manually downshift, but let the computer do the upshifting.
Over the years, I've competed favorably against 6spd 968s (2nd at Parade auto-x in 04 over several 6spds), but I still think the tip car will be the slower car in almost all cases, given equal drivers. I've been dusted by really good 968 drivers with 6spds!
Having said that, I think it's lots of fun to drive, and plenty fast. I pass pretty much all Boxsters, some Boxster S, and many 911s on most tracks. Could I be faster with a 6spd? Almost certainly. But, I'm happy with the tip. Now, if it was a tip S, that would be really nice.
Finally, the rules tend to vary, but in many PCA regions, and certainly in national autocrosses, cabs without roll bars are fine. However, cabs without roll bars are verboten on the track.