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Posted by: slowgls May 14 2014, 08:22 AM

Need to know what is a good set up for tire pressure on the Elantra. Im going to just run my Kuhmo platinum. Bob what did you run in your elantra?

Posted by: RPW00Mirage May 14 2014, 08:55 AM

start at 37 and chalk 'em dude. then bleed or add from there.

Posted by: Bobzilla May 14 2014, 10:29 AM

I know on the plat's when they were worn, I was able to run around 30-32 up front and I ran the rears around 42-45 (depending on surface/temps) definately chalk the fronts (don't bother with the rear). You want to rub them to the edge of the shoulder blocks on the outer edge and keep them there. the down side is you give up some crispness in turn in(think slaloms, you'll need to be way ahead of the game) but you'll get more overall lateral grip.

The Elantra almost always required a 10-12psi differential between the front and rears to get it to rotate. So... I would start with the front at 32, rear at 40 and drive it 2 runs checking the temps between to keep them the same. If it's loose, drop the rear pressure 2psi (Yeah, like that is going to happen!). If it's tight pump them up 2psi and run again.

Posted by: slowgls May 14 2014, 03:14 PM

Thanks Bob just what I was looking for.

Posted by: slowgls May 14 2014, 06:14 PM

Dont know if im going to make a ton of runs, but this is good info to have. I have to work the event and get to run for free. Going to put Kendra in for a few runs.

Posted by: trololololo May 14 2014, 09:12 PM

sounds like a perk of the job worth workin for..

kinda like free backstage pass and snack bar access lol

Posted by: roydjt May 14 2014, 11:03 PM

Alright, I'm an autox idiot and I'm curious. You say chalk your tires, what exactly do you mean? Like take chalkboard chalk and scribble all over the treads so you see your contact pattern after a run?

-Roy

Posted by: slowgls May 15 2014, 02:10 AM

Marking the side walls to see if your rolling over. If so add more air.

Posted by: RPW00Mirage May 15 2014, 07:13 AM

like so :

Posted by: Bobzilla May 15 2014, 08:15 AM

Where we usually run, I can tell without chalk/marker because the surface is abrasive enough that fresh scuffs show up well. If you're not familiar with your tires or the surface doesn't generate much grip than marking the tires is a good thing to do.

Oh... and if you have a chance, throw in as much static camber as you can before the event.

Posted by: roydjt May 15 2014, 08:22 AM

Nice. Chalk your tires, have it your way. I see how this works.

-Roy

Posted by: RPW00Mirage May 15 2014, 08:50 AM

my slicks are heavily abraded, so i chalk the first run and if i'm happy i just run it and win it.

Posted by: slowgls May 15 2014, 10:01 AM

What do you mean by static camber?

Posted by: Bobzilla May 15 2014, 10:04 AM

car sitting on the suspension, as much negative camber as it can have. As the wheel compresses, that camber rate changes.... static camber is what is referred to as the amount of camber the wheel has at rest.

Posted by: slowgls May 15 2014, 10:05 AM

Oh ok. Yea the the needs some camber but the back seems to be fine.

Posted by: Alex2013GT May 15 2014, 10:29 AM

You weren't the only one. I may have googled it yesterday and read all about chalking your tires, then read a couple articles for the autoX newbie that were very insightful.

At some point I would like to take my hand at it as I'm sure it would be a ton of fun plus would improve my driving skills. For now, I will just have to take windy mountain passes as my source of fun.

Posted by: slowgls May 15 2014, 10:56 AM

Haha you guys are funny.

Posted by: trololololo May 15 2014, 12:08 PM

bike cops/metermaids in richmond chalk mine every hour on the hour

a free service courtesy of the state of VA.

Posted by: slowgls May 15 2014, 02:29 PM

I do need an alignment, and was thinking about camber bolts for the front. Like i said before the rear is camber already. What do you think? Worth it or nothing but problems?

Posted by: Bobzilla May 15 2014, 02:30 PM

Rear won't matter a whole lot. You're only going to use one tire at a time.

Just saw your post, I used camber bolts on Porky for several years. I only removed them when she was officially retired. Get all metal ones and tighten the crap out of them so they don't creep. I'd run all of it in front (with bolts, I'd guess around -1.5 to -1.75*) and leave the rear alone. I think stock it sits around -.9 and that is more than enough. Remember, the trick to making a front wheel drive turn is to make the rear as loose as you can drive it. The more grip the rear has, the more the car will want to push.

Posted by: slowgls May 15 2014, 03:00 PM

WHats a good brand to buy? Was going to check out amazon or ebay for camber bolts.

Posted by: Bobzilla May 15 2014, 03:01 PM

Dunno. I just bought cheap ones that were all metal from NAPA IIRC.

Posted by: slowgls May 15 2014, 03:05 PM

Ok. Are all the sizes the same?

These look ok,
http://www.amazon.com/Moog-K90474-Camber-Adjusting-Bolt/dp/B000HPQ1EW/ref=sr_1_1?ie=UTF8&qid=1400184543&sr=8-1&keywords=Hyundai+camber+bolts

Or these, but not for the price.
http://www.amazon.com/Whiteline-Hyundai-Elantra-2001-2005-Camber/dp/B00D83QALY/ref=sr_1_15?ie=UTF8&qid=1400184543&sr=8-15&keywords=Hyundai+camber+bolts

Posted by: trololololo May 15 2014, 03:56 PM

moog


none go past two degrees unless u get whole adjstableplate arm..
then u can join the dbag nation and run 165/70 15"s
lol

Posted by: RPW00Mirage May 16 2014, 07:12 AM

i just derped... don't listen to me. i'm not on street tires and setup completely different

Posted by: Bobzilla May 16 2014, 09:49 AM

Pirate tires (we also refer to them as "Purple Crack") run a lot different tire pressures!

Posted by: slowgls May 16 2014, 12:03 PM

Here is the track i going to Sunday. A fun tight track.
http://www.usairmotorsports.com/

Here is a fun track set up we do. So you have a idea of how we do. This supra is fast as hell.

Posted by: bhorste May 16 2014, 12:28 PM

Certainly had the back end stepping out a few times... but nice control.

Man, I miss racing.

Posted by: slowgls May 16 2014, 12:52 PM

Its around 500hp. The car sounds killer outside.

Posted by: trololololo May 16 2014, 06:59 PM

psssssshhh... only thing fast about that supra is that supra.

Posted by: slowgls May 19 2014, 09:07 AM

Well ended up not going this weekend. Had to update the plates on the car so we are 75 big ones less. Oh well. Still good info to have.

Posted by: trololololo May 19 2014, 11:41 AM

yes good info...