07-20-2015, 12:21 PM | #23 | |
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The Porsche 911 Turbo driver is actually a friend of mine, and is a very good driver. The problem was that he saw me approaching in his mirror, and naturally had to try going faster to keep me from overtaking quickly. So he overdid it, with the result that he nearly had an off. He recovered it well though. I had backed off coming into the bend to avoid pressuring him, but to no avail. And yes, I have never let him hear the end of it |
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07-20-2015, 02:33 PM | #25 | |
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Glad I wasn't there to demonstrate how not to drive! I've oversteered the 911T a few (loosely interpreted) times resulting in involuntary 180s and 360s on 90 degree turns on the track. |
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07-20-2015, 03:32 PM | #27 |
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The 911 turbo is very stable, I have quite a lot of experience with both, no track time in i8, but even in street conditions, the i8 has a lot less grip in tight turns with high speed due to narrow tires. Even in comparison to my Panamera Turbo with 540bhp it handles less controllably. The Porsches sort of slode in the back, the i8 understeers more.
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07-20-2015, 03:51 PM | #28 | |
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I've overcooked it myself plenty of times, and once did a perfect 360 at Bedford (track) when trying to do a high speed powerslide. Bad idea in an Lotus Elise. Looked cool though, as I kept going through the 360 Lots of luck involved of course, rather than skill Just 3 weeks ago, I went into the first bend much too fast on my very first session ever on the Top Gear track, at a charity event in my Exige. Fortunately I managed to control it and (just) held the line. Funny thing is my friend with the 911 Turbo (4WD), did the exact same thing on that same bend on his first time.....and went off into the grass Could be worse though, as at the second corner, a chap in a TVR not only went off, but hit the tyre wall, damaging his car |
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07-20-2015, 03:59 PM | #29 | |
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07-21-2015, 09:08 AM | #30 |
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Thanks for the update.
This is my last post on this subject. These encounters were skewed to the strengths of the Tesla. Most people agree that 0-60 is a traction event and the Tesla definitely has an advantage in the lower speed ranges. I'd like to see a post of a more typical pull...60-130 or 70-130. Another good test is the standing kilometer or the standing 1/2 mile. I would expect the Tesla to get slaughtered in the latter two. It simply doesn't have the legs to complete these races and is handicapped by it's drivetrain. I would consider these test of the Tesla to be as invalid as the comparison of the i8 to the Tesla in each of the videos posted. The instruments are invalid making the data useless. Cheers-MK |
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07-21-2015, 05:17 PM | #31 | |
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07-21-2015, 05:20 PM | #32 | |
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07-21-2015, 08:36 PM | #33 | |
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As an afterthought and in my specific case, I would be less inclined to sacrifice ride in favor for better track handling. While there may be enough clearance between the 245s and the front arches, chances are the springs and related suspension components will have to be stiffened in order to support the handling and to prevent rubbing from occurring. I would also have to consider adding additional paint film protection along the aft panel section of the front wheel wells since the 245s will definitely protrude out from the front arches. Guess I'll stick to borrowing my friends' track cars for the occasional novice runs. |
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07-22-2015, 08:28 AM | #34 |
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This is a good discussion, regarding tyre width.
Gut feel though tells me going from 215/245 to 245/245 would be too much, and likely to introduce oversteer. Perhaps 225/245 might just be a small but perceptible improvement? Perhaps we can even find 225 tyres that will fit on the current wheels? |
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07-22-2015, 05:33 PM | #36 | |
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It depends on the awd setup. If the car is mostly rwd 100% like a Porsche and then front wheels start pulling when grip is lost, amg has a fixed 33/67 setup etc, then you need more grip in the back. I feel the i8 electric motor pulls strong and early, which in my opinnion would support a typical Audi like same wheels all around type of setup more. |
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07-23-2015, 01:55 PM | #37 | ||
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Driven a PDK Turbo S before? Makes the p85 D dual motor feel like a slug from a dead stop. Tesla has cool tech but these are far from performance cars yet. Hopefully in the future they can pair better and lighter batteries to a lightened chassis. Nobody really cares about 0-60 anymore and that's the only decent performance attribute of that car at this point.
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07-23-2015, 02:19 PM | #38 | |
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07-23-2015, 02:20 PM | #39 | |
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The updated Tesla P85D is 2.8s 0-60. End of story. i8, and frankly any car, will take a serious drubbing. So everyone that's pointing to the fact that the i8 is a sports car, with Honda Civic width tires, while the P85 is not... Then what's the i8s Nurburgring time ?? “This car is not about the race track,” says i8 project director Dr Carsten Breitfeld. Oh, I see... So it's just a nice looking 2 seater that gets smoked in a straight line by a family hauler/grocery getter and isn't designed for the race track.
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07-23-2015, 02:35 PM | #40 | |
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07-23-2015, 03:08 PM | #41 | |
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07-23-2015, 03:09 PM | #42 | |
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Tesla says the upgraded P85D will sprint the quarter in 10.9s. The i8 runs in the mid 12's. The i8 is a beautiful two-seat hybrid sports car, but the P85D is just a freak of nature.
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07-23-2015, 03:24 PM | #43 |
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I can attest to the Tesla going into limp mode but it took closer to 5 min of heavy use then it cut power to about 60% (still 400hp?) until it could cool the batteries. Not a track car as stated, the cornering is incredible for what it is but lacks the feel of any BMW and the rear headroom is fine for me and I'm 6'1". The centre screen makes my BMW feel like it's a dinosaur.
Only reason to compare P85D and i8 is that they are both pioneering innovative cars. Can't really compare performance.
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07-23-2015, 05:27 PM | #44 | |
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When Tesla designed the car they were aiming for lower price points. They originally offered a 40 model for pre-order but sold so few that the rare 40 models were detuned 60s. The 60 itself didn't do well and has been dropped. Customers want range and it was eventually dropped. This isn't to excuse a so-so interior on car that can easily and often is optioned over $100k but the history is valuable. I hope Tesla's next gen model S is better or offers a better option package. I will say I like the infotainment screen. There's a case for physical buttons but the Tesla is screen is intuitive and fast. Easy to get to any control in the car. |
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