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08-27-2011, 08:38 PM | #1 |
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square question
When running a square set up on the track do you still run a lower front pressure than rears or keep them all the same. What is a good place to start with advan ad08s? Can't remember what I used last time around 35lbs I think
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08-27-2011, 09:21 PM | #2 |
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I find that 40-41 hot works ok on my Nitto NT05 275/35 18 square setup.I usually see about a 8 psi rise in the front with 10-12 psi rise in the rear depending on the balance.I have started at 32/29 to get the presures & balance that I like.2 psi more or less in the rear does make a notable difference in the balance and is a great tool to fine tune the car.
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08-27-2011, 09:48 PM | #3 |
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Sorry so if you start with 39 rear and raise 10 to 12 that would make your rears way too hot right?
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08-27-2011, 10:45 PM | #4 |
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08-27-2011, 10:50 PM | #5 |
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I also run my ad08's around 40-41 hot, but am running a staggered 265/295 and usually run a 30/31 front and 34/35 rear to achieve this hot pressure target. Think it's your driving style and preference that would dictate tire pressure but as an absolute for same characteristics would not do on a square as you would on a staggered for same results.
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08-28-2011, 10:18 AM | #6 | |
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Quote:
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08-28-2011, 10:58 AM | #7 |
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You are correct - Gearhead mentioned 29 for the rear not 39. I aim for 40 hot, depends on the track as to how hot the fronts will get, but I find 38-41 hot seems to be the sweet spot on the NT05 and the RA1's I have run. Gearhead and I aim for the same target. He does start his rear tire pressures a little lower than me - I usually start at 32/33 for both front and rear.
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08-28-2011, 12:15 PM | #8 |
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Oh sorry my bad, I misread. okay I will try for 33 to start and see where they end up.
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08-28-2011, 07:20 PM | #9 |
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I've found that 40-42 hot is a bit much with nt-01s. They start to slip, don't really wear onto the edges.
Still experimentig though..a few lbs makes a big difference in handling, but I haven't determined if it's better to have more pressure on one side yet. |
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08-28-2011, 08:30 PM | #10 |
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39 to 42 hot. I run 40/42 and find it a good balance.
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08-29-2011, 10:13 AM | #11 |
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I run 39-41 hot.
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08-29-2011, 02:34 PM | #13 |
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I am about to track my E92 (VIR). Will be set up with Apex Arc 18x10 rims, BFG G Force R1 275X35X18 square. Anybody have experience with BFGs on the E92. Assume cold pressures in the 30 / 33 range would be a good starting point.
Appreciate any input. Thanks vz
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08-29-2011, 05:03 PM | #14 |
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40-41 hot ad08 265s. getting very even wear.
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08-29-2011, 05:14 PM | #15 |
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I run a bit less on my AD08s, but it's not a square setup, it's my street setup, 255/275.
Running a square setup with slicks, on advice from a racer/instructor, I've been running the rears with less pressure than front to help settle the car and avoid oversteer. I've had only 4 days on this setup, though, and am still experimenting. |
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08-29-2011, 05:19 PM | #16 | |
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08-29-2011, 05:22 PM | #17 |
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08-29-2011, 05:24 PM | #18 |
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