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 Post subject: Azenis pressures ?
PostPosted: Thu Sep 01, 2005 11:15 pm 
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Carl & Andrew Frick are en route to Rally Tennessee near Nashville. This is a tarmac rally & they have Azenis to run. I just talked to Carl on the phone & they wanted me to ask you folks who run Azenis what pressures you use/recommend.

There are 55 stage miles on Sat & 55 stage miles on Sun. The stages are 6.3, 5.8, 12.6, 3.1, 6.3, 5.8, 12.6, & 3.1 miles long run over a period from noon to about 6:30p. There are also 105 transit miles during this time, as well, with 3 service stops of about 15-30 mins. So, what I'm getting at here is that, except for the 12 milers, the stages aren't too long & there will be some brief cool down periods & some "normal" hwy driving mixed in.

So, what pressure suggestions (& any other Azenis tips) do y'all have for me to pass along?

Thanks!

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PostPosted: Fri Sep 02, 2005 8:24 am 
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Official Mustang Tire Corder
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What kind of car?

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 Post subject:
PostPosted: Fri Sep 02, 2005 8:35 am 
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Dang, I thought I'd remembered to give every detail.

Scirocco.

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PostPosted: Fri Sep 02, 2005 9:08 am 
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On the Miata (2300lbs) for track, I set the 205/50/15 Azenis at 29psi cold, and after a 30 min session they're between 34-36psi, and have just started to get greasy at the end. This is a fairly forgiving setup, and I imagine Carl could get a little more aggressive with the pressures than I.

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 Post subject:
PostPosted: Fri Sep 02, 2005 11:30 am 
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The rocco should be right at 2000 if not under. WIth it that light and doing high speed for and length of time I would run normal street pressures on them, 30-34 in the front and 32-36 in the rear

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PostPosted: Fri Sep 02, 2005 12:42 pm 
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I track/autocross 195/65/14 Azenis Sports at 32F, 30R on a Miata. On track, if there's a predominant turn direction, I might bump the front outside tire up 2 lbs. Whenever I have the opportunity, I bleed the pressures back down to these figures. Under constant driving, the tire temperature will eventually hit steady state and the pressures stabilize, requiring no more adjustment. Hope this helps.

Good luck Carl and Andrew!

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 Post subject:
PostPosted: Fri Sep 02, 2005 1:19 pm 
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Probably not much value for setting up a Scirocco, but the ideal start pressures (based on even tire temps) for Azenis 215's on my '96 BMW 328is (~3200 lbs) are 37 psi front, 32 psi rear - this worked best for both autocross and track.

Tire size: 225/45/17 on 8" wide wheels
Ideal camber: -3.0 degrees per side front, -2.0 degrees per side rear

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Last edited by Keith Quistorff on Fri Sep 02, 2005 1:26 pm, edited 1 time in total.

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 Post subject:
PostPosted: Fri Sep 02, 2005 1:21 pm 
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My CRX weighs in at a bit under 2000lbs and I usually shoot for 36F/32R hot on regular pavement. On really grippy surfaces such as Laurinburg, I'll bump it up to 40F/36R hot. This is with 205/50-15's but if I were to run the 14's, I'd be inclined to bump them up another 2psi all around.

Jim


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 Post subject:
PostPosted: Fri Sep 02, 2005 1:25 pm 
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Keith Quistorff wrote:
Probably not much value for setting up a Scirocco, but the ideal start pressures (based on even tire temps) for Azenis 215's on my '96 BMW 328is are 37 psi front, 32 psi rear - this worked best for both autocross and track.

Tire size: 225/45/17 on 8" wide wheels
Ideal camber: -3.0 degrees per side front, -2.0 degrees per side rear


Oh, and I have run the new Azenis (615's) for one autocross on my STi (~3300 lbs) - again, probably not much correlation to a Scirocco. They had the best post-lap temperature profile when started/cool at 35 psi front, 34 psi rear.

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 Post subject:
PostPosted: Fri Sep 02, 2005 2:01 pm 
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On track, the key is to not let hot pressures get over 40 as that seems to be the threshold for greasiness.

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 Post subject:
PostPosted: Tue Sep 06, 2005 10:46 pm 
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Yeah, well, as with so many things rally, unpredictable factors in the system can sometimes upset a carefully laid plan. :? We set the pressures at 38F 34R as suggested and they felt good until we hit a patch of loose gravel in a downhill braking zone and slid straight off and bounced through a culvert. Fortunately we had no problem getting back on the road, but we needed to run our tow strap around the LF control arm and to a big tree, and then back up hard a couple times to get the wheel to clear the bodywork so we could continue. We also pretty much shredded the inside edge of the tire, as we found out when we got back to service. No problem- we replaced the control arm and put the 2 best Azenis on front and had 1 Azeni and 1 Goodyear RS-A on the rear (still 38F 34R).

Andrew's confidence was somewhat shaken I think, and we proceeded at a more conservative pace until he missed hearing me call a Left 3, leading to a long spin that ended with us backing into a ditch at about 30MPH. Again we were fortunate to be able to push the car back onto the road, though we had a flat LR tire which we finished the stage on and changed on the transit. Our alignment was a bit off now, though, and our RR tire was rubbing on the spring. We confirmed that it was rubbing badly when it blew out explosively later in the transit, and we drove the last couple miles to service on the rim.

All our efforts to gain some clearance for that wheel during the service period were in vain, and we would have had to withdraw had they not cancelled the last stage of the evening, giving us until morning to solve the problem. Luckily we hardly needed any time at all, as we saw our answer right across the street- a parking lot with big molded parking stops in it. We sidled the Scirocco up close to one so the RR wheel was up against it (we used the mangled transit wheel), then wrapped the tow strap around the top of the wheel and hooked the other end to our Tahoe on the other side of the stop. With the curbing to keep the Scirocco from getting dragged sideways, a couple good pulls with the truck turned our 10 degrees of negative camber into about 5 degrees of positive, and we were "good to go racing" on Sunday.

Now we were down to 2 really marginal Azenis and 3 decent Goodyears, so we put the Goodyears up front and the Falkens in the rear (relevant thread content: 42F 34R). The RS-As actually felt pretty good, though we were now moving at a really conservative pace, as the goal of the weekend was to successfully finish Andrew's first event. Which we did, without much further drama, though the time we lost on Saturday put us way into last place. Still, we were ahead of the 6 teams that DNFed.

So thanks for all the advice on tire pressures. :)

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 Post subject:
PostPosted: Wed Sep 07, 2005 12:45 am 
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I guess the moral of the story is that any tire pressure is better than none at all.

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