TRACTION! How do you guys do it.....
 

When I Was boosting 4, I would tak eoff in first, then at like 5mph, I would be able to just floor it, and spin them....spin them....grab second and spin them...and spin them... then get third gear scratch...Then I see videos of people boosting 15 or 10 and such and not even a screetch. Is it tuning????????

225's or bigger are the only way to go. also it is in the driving i could spin them all day being NA if i tried.

225's!!!!!!!!!!! They fit?????? I thought I was pushing it with the 195's

225's fit like a champ. But I'm not sure if ya have the 14 inch wheels... on my 15's they fit pretty dang good!

Yea, What about the 14 inch daisys! Anyone running that with 225's or bigger?

try not flooring it...

but yeah 225s fit easy.

Or wait....If they fit on the 15's then they have to fit on the 14's haha,right?

In that case. Im gonn ahave to get sum!

a 4.10 with an LSD will cure wheelpin completely at less than 8psi.

it wont seal on the puny daisys you need a 7 inch wheel atleast to run those.

I guess I should have made it clear that I Was running after market wheels.

yeah your wheels are sweet dude. we need to do something about all that rubber you have though it is being wasted in the garage.

So your saying it wont fit on the daisys? Whats the biggest on the daisys do you think? isnt there a calculator for this. Let me check.

it is a 5.5 or 6 inch wheel. you might fit 205's but it wont seal right. get some real wheels. or get some slicks on those daisys at 195 it should hold alot better. I recomend rotas, kosie t1's, rpf1's, sportmaxxes, etc see what you can afford and like. it will dramatically improve the handling.

Wait.. What do you mean by wont seal right

Replace your boost gauge. I didn't break loose in first till 10psi and I didn't break loose in second untill 14psi, unless I dump the clutch hard. Are you really tearing it up like that on only 4psi? I want your engine. :gay:

Yep. I was...And Its not the boost gauage because I swaped it with a diff. autometer and it read the same! Now I wish I took video so I can show you guys....

yes more video needed or better yet dyno results.

Well.....Cant areally do that anymore. Fried rings. When I put the new motor in and it does the same, ill take video for sure. I dont see why not though.

for what it's worth, a hard launch even at my puny 9 psi will spin the tires.

I dont mean launch tho..I mean, starting at like under 2k revs and just flooring it in first to second is what I mean. But maybe its the width of the rims.

I have 205 azenis on 6.5" rota group n's. They basically rock. Your wheel spin problem comes from throttle control though lol. I had shitty all season tires on when I was turboed before and I never once spun out, and I still drove aggressively.

If you can find some nice, light 14x7s, you can get 225/50-14s.

Tires are designed for a specific size range on the size of there beads, if the gap is to large or to small the bead wont seat and pressure will escape. Ive seen this on our seina when my dad put some 225's on it to help the handling abit but found that the air pressure never stayed up to spec. and if the tire is to small then it might not be able to take the laod properly and fail due to heat, and other factors.

Ohh ok. So you meant on the rim. Ok thanks!

Even if the tire fits on the rim (seals) it still doesn't make it right. A wheel that is too small will change the geometry of the tire and turn a 225 into a 205 (or so I have been warned). I found a CHEAP place for scratched or other defective rims (just looks - nothing too wrong with them). I'll try to find the website when I get home. They were selling 13/14/15" x 7's for something like $35 each.

nice i hope you find it could mean a set of slicks for my track events if i ever get to them ;)

205/50/15 Azenis are almost as wide as the average 225

my 225's struggle for traction... the two best solutions i've found is 1) add a passenger 2) shift slower and not floor it as quickly. but i still spin in 4th sometimes if there are any ripples in the road. so i guess for number 3, avoid rough road.

yeah but real 225's pwn 205's

What kind or rubber are you running? My FZ4's would spin alot, but after I went with Kumho spt's, I only spin in the higher rpmz in first. I'm running 195, 15's (6inch).

Get some better fucking tires.

im rocking azenis in 205.if i dump it on 6psi.i can break em loose.

donuts made easy curtousey of my right foot. :gay:

Dump it? As in dumping the clutch?

For what it is worth, i took the turbo car out for an autocross today and turned up the boost to 10psi again (on 50/50 100octane/91 octane). On 205/50/15 azeni's, I was loosing traction in 1st due to power alone, but it held in every gear beyond that. I also have a 4.1 rear on an rx7 clutch diff, which helped a bit with traction.

225/45/16 hankook rs-2's son !!! get some decent rubber in there. although i ran 195/60 azenis and didn't loose traction unless i was driving in the rain.

Attachment 216298

yea,droping the clutch.

If your clutch is grabby enough, you could find a way to loose traction shifting into 5th gear if you tried hard enough I suppose. Driving harder does not always mean faster and if you are loosing a ton of traction on launches or shifts, you need to adjust the way you engage the clutch. Tires will help a lot though, and when I said I was loosing traction in 1st gear, it was just slightly and maybe better described as being on the ragged edge of traction.

Shinobix, what wheels are you using at what offset?
Just curious due to how far the wheel/tire sticks out.

I have trouble with traction in 1st gear, whether in a straight line or turning. That's on Kumho v710 and 15psi on a very safe tune. I can get it to break loose in 2nd, but then I'm abusing the car ... which I often do. 1.6 diff is still holding!

There is no way from a ROLL in 1st gear 4psi will break the tires free unless you are on some seriously shitty tires that are treadware rating 2000. Or dumping the clutch while moving.

moving back towards 0* camber will gain you some traction as well :bigtu: ... there's something Lanny never mentioned ;)

te37's 16x8 +2

i ran 7x17 215/45 r17 and spacers at the rear the tires sucks so if it´s wet you can´t get any traction :D

Big Tires.. Big wheels..
 

I replaced my stock rims/tires with these...

http://www.borbet.co.uk/bs.htm

and 215/40/16 tires ( i believe... i'd have to go outside to verify, but it's something like that... )..

but the end result is the exact same outside diameter as the stock setup..

and I can't do anything to make these break loose... it corners like it's on rails.. I have no body roll ( stock suspension )..

but watch out for those potholes.... I've already bent one rim.. but it really makes a stand out difference in handling and ride..

you can't break 215's loose?

just this morning on the way to work i dropped into 2nd and floored it to "merge" around some slowpoke.... car went sideways then forward. whoops. :D

(225/45-15 Hankook RS2)

Traction....
 

the tires are the only thing I've changed as of yet...
so my '91 miata is still making the factory 89ish horsepower...

I'm shopping around for a turbo kit that won't kill my bank account, but actually does the job...

How are you guys running your 225/50/15's without a problem???

I had a set on my 15x8's and I was told my fronts were not gonna fit w/o hacking up the inner wheel well up front(and therefor spraying loads of crap all over my engine bay).

See my sig, I've had these dang 15x8's for about a year now, and it's driving me nuts not having them installed!

Please help good sirs :bowdown:


Test fit pic for the rears:
http://www.ilostmymind.com/upload/miata_1rim2.jpg

Maybe your clutch is slipping and you THINK it's tires because, well, we all want to believe in something. ;) I'm running 205s I think... shit I'll have to go look now. They might be 215s. They slip a bit in first when the boost hits but hook up find in second on. I know what you need. A bigger turbo! It's spooling to soon that's the problem. lol

honeydesean, Your in Antioch? I'm sure you've seen my Laguna running around town. I live here.

lol, that's cool.

Where in town do you live at? I'm up north of the walmart on Deep Lake Rd.

Gurnee here!

I just got some clean 15's. Gold with chrome lip. Im gonna try and get some 225's for the rear, and 195's???? for the front
Hopefully that helps with the traction issue!

Who the fuck told you that shit mine rub a little under laod in the front but damn after about 9K miles this problem was fixed, IE it wore down dont listen to hacks at tire stores about that shit put them on yourself and try it out. If it works great if not then look into what you have wrong the most drastic change would be taking our the airbag sensor holder thing wich mine rubbed on for a while, under full laod.

FYI: Toyo makes T1S and T1R in 225/45/15... only mfg I've found to make this size.

I would think that would mess with how the car handles, anyone have any input on this kind of staggered tire size setup?

Yea, only thing is it was my brother in law who runs and owns a full custom metalworking shop and kinda knows what he's talking about. :D

damn dude you got some opinion don't you :rofl: fine ive run mine for quite a while with no ill effects 225-50R15 gforce sports just a hair over 24 inches tall and about 30 lbs totall installed the biggest hurdle i found was tire wieght as it is hard to find a sub 20 lbs tire in that size. glad i have 9.5 lbs rims. Trust me honey put them on and go for a drive your car wont rip of body parts and your world will not come to an end.

This.

Pai, you failed to mention that you've been running mismatched near-bald econo tires. A '92 Geo Metro under half-throttle would light those things up. :gay:

In all seriousness, it's the tires dude. My '99 was putting down 180+ at the wheels at 9psi and 205 T1-Rs worked just fine, even with fairly aggressive launches. Heck, even a set of 195 T1-Rs or Azenis would likely stick well with your GReddy kit at 5psi.

Aesthetics aside, 225s are overkill at sub 200rwhp power levels. Not too mention the fairly significant increase in unsprung weight.

damn well im havving traction problems now to but that is becouse i am back at 14 psi fuckin 225's wont take more than 250whp reliably guys FYI ;) looks like it is time to find some 300's

You remember Screamin99, right? IIRC, he was running a 215/40 T1-S when he made his 11.9 pass. The car was dialed back to 12psi at the time (~315hp), but had put down just under 500whp at 24psi.

I think there's a slippery slope with the amount of improvement one will see by running wider and wider tires. At some point it becomes more about judicious throttle modulation than anything else.

With that tired engine boosting 4 pounds, Pai was likely making no more than 120whp. Even decent stock sized tires should have little trouble keeping up with this level of power.