10-12-2021, 04:29 AM | #1 |
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Nankang AR-1 tire pressures
Hi Guys,
What pressure do you run hot in your ar-1 ? I have previosly run with A052 and made the switch to ar-1 but man what a dissapointment so far, really slippery and unpredictable in comparison. Tried playing a little with pressures but could not get a good feel. |
10-12-2021, 08:03 AM | #3 |
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I presume you are talking about for track use since you're posting here....
I haven't run these myself (yet), though was strongly considering trying the AR-1 next instead of NT01. At a recent track event I ran into a GT4 driver who seemed to be "in the know" re: AR-1's from his circle of track buddies, and his comment was that really low pressures are optimal for this tire (eg, 28-30 psi hot). Obviously ours is a heftier car, but have you tried that low? |
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10-13-2021, 11:59 AM | #5 |
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10-13-2021, 11:36 PM | #6 | |
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Quote:
30-31psi hot target & immediately set your hot temps after each session in the pits. OP, are you on oem dampers? Coilovers?
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10-14-2021, 12:03 PM | #7 |
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I was going to post this as a separate thread, but since we've got some Nankang momentum going on here...
fanatic1 had kindly shared with me in past that he could fit the 295/30/18 AR-1, on the front, with the Apex 18x10 ET25 wheel on stock suspension without rubbing (running -3.5 on track, but stated that even with 1.8-1.9 on the street still no rubbing). This was on stock suspension at the time. As noted by some others, he stated the AR-1's in this range run narrow. Before I pull the trigger, can anyone else corroborate this? I'm on the B16 Damptronic (so strut/perch clearance may differ) and run -3 camber at track, so trying to figure out if I'd get away with this... maybe a 5-10mm spacer would be needed (?) Would plan to do the 315/30/18 out back on the 11" ET44, which reportedly is completely OK. |
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10-16-2021, 08:44 AM | #8 |
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I run 30-32psi hot on ar1s
275/35/19F & 305/30/19R Even a 305 square setup I am at 30-32 depending on track surface and what I'm trying to correct In Terms of behaviour.
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10-24-2021, 11:41 AM | #9 |
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We have run this tire on a E30 M3 Racing car and our experience was that it needed more pressure than A052s.
But from your information i see i need to try and drop the pressure a lot as i run around 36 psi hot in them. My mods so far is only eibach springs and stage 2 tuning. But KW clubsport 2 way, rear KW toe arms and complete AP Racing front and rear kit with air vent system from Schirmer is on its way so next season i am hoping for some dropped lap times. |
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10-24-2021, 11:42 AM | #10 |
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11-18-2021, 08:54 AM | #11 |
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Running the CRI/CRS on my F80, same advice I received and saw on track was 29-30 psi HOT. Went out 24 Cold after 1x warm up lap at ButtonWillow I felt the tires were up to temp. Laps 1-3 were very consistent, could have come in to readjust pressures but usual session was 4-5 laps
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11-18-2021, 05:03 PM | #12 |
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A052s I found run best around 34-36psi hot.. they have such a soft sidewall so you can't go too low.
I'm not sure if the AR-1 has a stiffer sidewall than then A052 but if it does then you probably want to run lower (31-32psi) as the crowd suggest. Also A052s heat pretty quickly so maybe you're not used to that with the AR-1s which probably need more heat in them to work well. That would contribute to unpredictable traction. IF you don't like the AR-1, I hear the CR1/CRS is the 'hot' tire now.. also Eagle SCR3R as well. |
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11-22-2021, 07:50 AM | #13 |
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I run 31 hot on AR1s
295/30 front and 315/30 rear These tires stick!
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