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315/30 tires on the rear of WB??

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Old 10-26-2016, 05:19 PM
  #16  
NYC993
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Originally Posted by _snowbird_
Thanks for those insights. I'm a little hesitant to run these older tires. I didn't consider the heat cycling impact.

I was intending to get new, dedicated DE tires - and I thought I'd go with slightly larger with 235/295. But maybe I should do some more research.
I really like nt01s and I would def try out 235/275 combo (sizing is limited so no 285 or 295). They lasted me about 45-50 heat cycles (about 4 DEs - in advance group) and I don't have crazy camber so wear at the edges were the limiting factor. I do have RS sway bars to help with the roll.

If you indend to track a lot, I would take AWD out to the the save hassle later if the diff fails or front cv boots split. FD motorsports can put kit for about $1k including SSK.
Old 10-26-2016, 06:15 PM
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Churchill
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315 is way too much tire for a 993. It's got 282 horsepower. Run 265's or 285's until they become the limiting factor, and move up from there. A 991S (400hp) uses 295's.
Old 10-27-2016, 11:00 AM
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Originally Posted by NYC993
I really like nt01s and I would def try out 235/275 combo (sizing is limited so no 285 or 295). They lasted me about 45-50 heat cycles (about 4 DEs - in advance group) and I don't have crazy camber so wear at the edges were the limiting factor. I do have RS sway bars to help with the roll.

If you indend to track a lot, I would take AWD out to the the save hassle later if the diff fails or front cv boots split. FD motorsports can put kit for about $1k including SSK.
Cool - thanks. I don't intend on tracking "a lot" - maybe 2 DE's a summer. Enough that I want dedicated wheels/tires, but not enough to justify modifying my drive-train etc.

I'm really just trying to explore/experience the capabilities of my car, and become a better track driver. At least those are my current sensibilities. This could change
Old 10-27-2016, 11:29 AM
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First great to see people still tracking 993. It's a fantastic little car. For 2 DEs a year I would not bother with track tires, but hey give it a try. You will probably get hooked and end up doing more like 4-6 events. I was planning to do 3 a year a couple years ago...this year I did 10 with 1 more to go.

Be prepared that you may not see any improvements from better tires in lap times in first few events. Do you have proper seats and harnesses? Without them the extra grip is useless. Seats was the best upgrade for me.

IMO, one needs to spend quite some time to get adjusted to g-forces and feel of the car to be able to push the car hard enough to see the benefits of grippier tires. And without any nannies you have to build up to it slowly. For me, it was once a month including some open track events with 3 hours a day to get comfortable pushing the car. But this also spans over 6 tracks.
Old 10-27-2016, 12:13 PM
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I'm looking at my dedicated track wheels/tires similarly to my summer and winter tires for my DD. Use what's best for the job at hand.

I'm still a beginner on the track, and my home track is pretty challenging (Mosport). I like the idea of having a nice sticky tire to help me - although I'm sure having crappy track tires would be a 'valuable learning experience'.

With 2 young kids at home, my time for DE's is strictly limited. Having said that, when I bought my car it came with a bolt-in roll-bar and GT3 style (replica) seats, which are sitting in my garage. I haven't sold them just in case
Old 10-27-2016, 03:37 PM
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Originally Posted by Knight
With such a large size rear, wouldn't this promote more understeer?
yes
245 - 315 is NOT the hot setup for "performance", but they look very cool.

245 - 275 / 285 works very well for "performance".



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