LOL. The shelves of trophies would seem to indicate that poseur status = not found.

I like your avatar.

when it's warm out i have almost no issues with 195/55/14 t1rs and 4:10 gears. the little extra tire diameter helped quite a bit

Try 300+ ft-lbs at 2000 rpm. And when I had 260 ft-lbs with my FMII+50 shot, I spun through second on T1S 215-40-16s. I'm beginning to think your 240 whp on a 2554 at 10 psi or whatever was on a slightly optimistic dyno.

Frank

Haha , it was a little sarcasm...just like the sarcasm in ThePass's posts ;)

you need a tuneup or a clutch then... i break loose in 2nd from a roll on the same shoes.

"I can't floor it in first...without spinning tire"

He can not floor it without spinning tires, conversely, when he does floor it in first he spins tires.

"i break loose in 2nd from a roll on the same shoes"

You break loose in 2nd from a roll. Sounds like the same issue to me...

Neither guy can drive? :laugh:

I've been thinking that, but it made 212 hp on a Dyno Dynamics which was known to read about 10-11% low, and a '99 with the same setup but better exhaust made 217 hp. BEGI has a plot on their website of a 2554 making 240 hp on a DD.

Regarding wheel weight, the irony is that lighter weight really helps on bumps, and most tracks are far smoother than many roads (if you don't hit the berms); so unless you are competing or going after the last 10ths of a second the light weight doesn't have much effect.

Like I said, pose away, I'd do it too, bec 225's just look damn good :D

Oh, and I can feel the weight difference on certain types of bumps, between my superlight SSR + RE01's, vs the 15x8's + 225 RA-1's. It's the sort of the same feeling live rear axles get when going over certain types of bumps, but smaller.

P.S. it's the peak torque mulitplied by gear and diff ratio divided by tire diameter that spins tires. 14 psi will more likely spin tires than 10 psi

I've got 225 RA-1s on 6ULs for the street but it would be nice to stick some fat 245-40 or something on the back for straightline performance if I wanted to. I suppose if I want to hit the strip (to pose) I could get some MT Street drag radials in 225-50 for the rear. Remember with my LS6 swap the traction limitations from a standstill will be evident. 3.42 rear.

Frank

't <-- I must have missed that.

frank, dont be a douche.

I used to mob around on 185/60s on 5.5" daisies. The ability to turn the rears into smoke whenever I wanted was a real hoot. It was an awesome sleeper, too - I destroyed some poor soul in an E46 M3 on the daisies.

but you can spin it say that since he's not breaking loose in 2nd like you, he's inferior!!!!

hell ive broken traction in downshifting to third at 50 mph on my 225's i could imagine if i ran less tire how much more squiriming i would have to contend with.

Wheel and tire weight has EVERYTHING to do with accelerating and decelerating.

Or were you joking?

Honestly, I think that the Tire Rack choice for a daily driver is exactly wrong. It might not be so important to some to have the last bit of speed on a Miata, but everyone can appreciate what lower unsprung mass does for the car... cheaping out here means losing the light, nimble, willing, eager feel of the car, and that's a real loss.

Yes, apparently since I have grip in 2nd gear and not 1st, my torques are all screwed up, lol.

In all honesty, I know that part of my problem is too much rear camber, as in, it is decreasing my available contact patch. Not worth dealing with until it warms back up around March, as the 195/55/15 Blizzaks on my wide-ass 6.5" Rota are absolutely silly at full throttle, even though I am dialed back to the stock actuator pressure of 7-8psi.

If you'd kept your LS6 in a Vette, you could run 315 rears on cheap replica wheels, and still have traction limitations.

yeah but unless he had it in a newer vette he would have several hundred pounds more wieght to help him stay planted as well.

Everything? So the car's weight doesn't matter? <snicker> The total inertia in the wheels might be 5~7% of the car's total inertia.

unsprung wiegth= 4 times sprung wieght good rule of thumb 10 lbs on wheels is 40 lbs as far as acceleration etc goes you should know this jason.

magna the maximum inertia multiplier is 2x not 4x if all the weight is concentrated on the outer edge of the tire. The calculation is based on energy in the angular momentum.

You guys are getting all mixed up with sprung, unsprung, and rotating weight. It's not just that lighter wheels/tires remove unsprung weight (which they do), it's that they remove unsprung rotational weight. Rotational weight is the enemy of acceleration, braking, and handling (wheels have, like any other rotating object, a gyroscopic effect that resists movement along axes other than the current rotation).

For all the talk of wheel weight being the enemy, i have yet to see an objective test comparing wheel weights where the car was significantly (more than .1 sec on a 60sec course) slower with a heavier wheel/tire combo.

I doubt 50 lbs off the car's sprung weight would make much of a difference either, but I think we can both agree it's better to be 50lbs lighter, all other things being equal.

Wheel weight is really a good place to save if you can afford it.

But if you aren't trying to win races... who cares? For the majority of street/track people.... the cheapest wheel that doesn't explode works :p

People who spend the equivalent of the GNP of some small countries racing professionally have concluded that rotational mass at the wheel counts 4x more than non-rotational mass when accelerating and decelerating. I am in no position to discount their findings and will be far more likely to trust their conclusions than that of my fellow dudez on teh enterwebz. aight?

What about those of us that daily drive what is essentially a race car and want to improve ride, response, and control.

It amazes me that even in the Miata crowd so many don't realize the huge benefits of truly lightweight wheels.

Worst mistake I ever made in the ownership of my car was selling my OEM BBS (10lb) wheels. Who cares how much tire you can put on them? The car has never ridden, reacted or handled quite as nicely since.

buy some 10 lbs rpf1's like me goospeed :P only 200 someodd apeice on sale.

I'm hoping this is mainly aimed at gospeed and not the OP.... as there is 3" of wheel width missing :p

yeah its gospeed fwiw i read the 4-1 thing in the norman garret mazda book and it made sense. I didnt know that they made 6uls in 15*10 cool if they had had them back when i bought my wheels i woulda bought 6uls though





















rpf1's are 15*7 newb :P

Yes... but the majority of wheel sizing talked about here has been 15x10... Unless he goes with the 15x9 6ULs.

And they didn't make the 15x10 6ULs... I think it was already mentioned in the thread, Emilio didn't get enough preorders to justify the molds.

4 lbs per wheels is pretty noticeable in terms of ride quality.

I'll let y8s calculate the ratio of energy stored in a 30 lb 24" diameter wheel due to its angular momentum to that of its forward velocity. :)

Hold up! Are the XTRs that I just saw at 949 real? Emilio is playing ball! This is badass.

looks like emilio949 is coming out with a cheap wheel and a 17 wheel.

Awesome. That is about the best possible response Emilio could come up with IMO :bigtu:

Damn, this is the first I've seen of these. Way to play ball. :)

XTR coming Summer 2010 - Low cost gravity cast, 10 spoke design, silver or black
15x9 +20, +36 4x100, 4x114.3, 5x100, 5x114.3 15 -15.4 lbs $109

C

I think they were just added today.

Nice, 6UL for the track and XTR for the street.

that's...awesome. yet another reason to support emilio :D

Holy crap! Go Emilio! :D

way to go man

Nice, any pics of the new wheel?

I wanna see it too! There's gotta be a CAD rendering he could post up for us :D

Thanks TR for creating competition

see, and you guys thought this was bad thing? you guys apparently have never been a child of divorced parents.

if the xtr's are available without a 4 month wait, who wouldn't buy them? i'm buying a set of 15x8 4x114.3's for my galant vr4 too! 15x8's for our shop crx, and 15x9's for my miata.

You have a Galant VR-4! Thats my ultimate Daily Driver.

Competition is good for the customers.
Unfortunately too few understand how competition has been stifled in health care which is why we have the sky high costs.

The only people I know of that don't understand that work for the federal goverment, or wish they did.

Pics or ban. Just kidding :giggle: I thought I saw that when I was speed reading. I was like what!?

FYI...

Just got the FM catalog and noticed that FM now carries these.

It states TR will ship directly to you w/ free mounting and balancing. $109/wheel.

Ouch.

I really want to know what the XTR looks like now, and want to see it hit the market soon. I'm sure it's similar...but if it has that price AND a decent lip on it they're going to sell like hotcakes. They are listed as being concave, which combined with the offset probably means a lip not even close to the 6UL, which is perfect.

A $100 15x8 from Emilio...I now believe we actually landed on the moon.

troll troll troll your boat...
http://forum.miata.net/vb/showpost.p...&postcount=101

FM has been a TR dealer, so it's not news to me.

banhammer

That catalog makes me want to go into crazy debt.

But on the wheels I'm getting the 949's.

Good spank material

They look pretty good. I'm sure that's probably more than I'm allowed to say.

You're not on my friends list anymore.

http://img38.imagefra.me/img/img38/6...7m_adb5c81.jpg

http://img40.imagefra.me/img/img40/6...8m_95c6e08.jpg

http://img40.imagefra.me/img/img40/6...9m_513538b.jpg