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-   -   project 265/45/16 CUMho, lower, bumpsteer, corner balance, align (http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/476824-project-265-45-16-cumho-lower-bumpsteer-corner-balance-align.html)

krasuskyp 05-27-2009 09:39 PM

project 265/45/16 CUMho, lower, bumpsteer, corner balance, align
 
Drop'd her off @ me local P wrench / speedshop for the above yest. and await Tire Crack's shipment of them ohso potentially delectible CUMho Ecsta's.

For now, it's on the scales.

No driver, fumes (literally): 2755lbs - this - after I removed a verified 150lbs of 'crap', interesting insight into the curb weights of these. I'm pretty satisfied with that # for now.

Nice was the L/R & F/R 'spreads' - not too bad of baseline disparities. IIRC, it was something like F 485/460 R 913/889 (don't go doing the math I'm just spewing #'s from yesterday's 1/2 synapse). So hopefully will dial in nicelike.

Alwaysalways some ohso tastybits to be found @ Musante when I go. A silver/blue 993tt, some crazysic orange 914-6 racer, Chris's RSR, and this '76 mit Better Bodies Bits... anyone recognize? Whilst I'm not mucha fan of the open slat look for the fender vents, the package as a whole was fersure boingerific - quite well set up / executed... BOING! (excuse 951 colleague's cruddy iPhone pix):

http://forums.pelicanparts.com/uploa...1243484946.jpg
http://forums.pelicanparts.com/uploa...1243484978.jpg

Other random interesting scenery - gratuitious shot in front of their new digs (verrrry nice upgrade for them BTW, wicked scenic scene / uber layout & spread)... my junker, owner Chris' yellow RSR on lift, his wife's superclean Mexico Blue '77:
http://forums.pelicanparts.com/uploa...1243485157.jpg

Love this color, car was setup real decent:
http://forums.pelicanparts.com/uploa...1243485193.jpg

Course tires not there and now they're off to run Watkins Glen event; I'll report back on lowering / corner balance results / tire pics & impressions hopefully Monday. I'm am beyond giddy to finally tackle this much needed punchlist item, and the prospect of these new 265's has got me bonerfied...

Miguel Antonett 05-28-2009 04:53 AM

Hey Paul, you're really getting ready for the deal in June, ah?

What else is on your "to do" list?

Enjoy it... it'll get better as you get closer to the weekend of June 27th :-)

krasuskyp 05-28-2009 07:51 AM

Hey Miguel-

Jah mon!

Nothing too much else tho - already put in fresh Brad Penn, brakes were recently done 'n flushed, will be tack welding up my RL8 exhaust next week to lose clamps and keep it from 'walking around'. Wanted to get a rebuilt WUR in there and also do the open air filter but I can't get Brian to return my inquiries (nudge nudge wink wink?). Then I've got to dial the idle down a c-hair (red headed), as well as the CO (even less than a red headed c-hair).

This endeavor has been a year overdue, so figured now was the time. I'd asked my few-miles-away '79 930 bud if I could 'borrow' his Kohklen I/C for the event but he didn't think it was a simple unbolt / bolt affair. I did. Bueller?

Otherwise, she's wax'd and ready to be packed up and mounted. Getting psyched.

Howabout you? Looking forward to meeting you Miguel.

gumba 05-28-2009 08:00 AM

I would be interested to know what the front camber is, and how they got it. Mine seems to max out at .5d.

911st 05-28-2009 08:37 AM

Do you have the Kuhmo's on yet? Pics if you do.

I am probably going to order a set of 265/225's for a set of 7&9 Fuchs I just picked up for my Carrera next week. :)

DDDD 05-28-2009 08:58 AM

Paul, that is a great corner weight spread you have, they should try to get the rears really close.

Your car looks *****in without those fat bumper pads. Have you seen where people put little bolts in the bumper pad holes to serve the same purpose as the bumper pad? I will try to find a picture. The bolts stick out far enough so that they are the first thing that gets hit from behind and they basically sort of do the same job as the bumper pads in theory.

Edit: Since when did b-i-t-c-h-i-n become a swear word?

Miguel Antonett 05-28-2009 09:52 AM

Paul, is this the air filter arrangement you're looking for?

http://forums.pelicanparts.com/uploa...1243529500.jpg

krasuskyp 05-28-2009 11:39 AM

Thanks Dave - I think so too 8-). Double D's are best left for:

http://forums.pelicanparts.com/uploa...1243535826.jpg

Yes Miguel - that's the one. Can you email me s8editor@s-cars.org that file (I can't quite read the notes), and advise any stats to know on the filter size, etc.? Or linky me to a thread here? Hugely appreciated!

Harold - will do on the pics. I just dropped the tires off - OMG they are saweeeeeeet looking. I'm way jazzed to try them. They look / feel *specatabular*! Will report back Mon. or Tues. once they return from the Glen and get it wrapped up. Can't wait...

Miguel Antonett 05-28-2009 12:30 PM

email sent.

DDDD 05-28-2009 01:21 PM

I can't wait to see those tires of yours. I want some bad. I have literally no rational excuse to get rid of my hankooks.

equality72521 05-28-2009 01:26 PM

I've got the Kumho Ecsta XS in 225/50-16 front and 265/45-16 rear and I absolutely love them. I just did ER polybronze front bushing and alignment/CB. The car handles soooo much better. I'm at 2770lbs with 1/2 tank of gas. The only weight reduction is the rear condenser and compressor for A/C.

911st 05-28-2009 01:34 PM

How is the fit?

Any pics on the car?

Do they have major stick?

equality72521 05-28-2009 01:38 PM

Quote:

Originally Posted by 911st (Post 4689387)
How is the fit?

Any pics on the car?

Do they have major stick?

Me?

They fit perfect on my 8's and 10's with the turbo flairs. I run 21mm spacers up front and 1/4" spacers out back. I don't have pics but can get some. As for stick? I'm actually worried about mechanical failure now because I'm able to torque the steering wheel so hard without breaking the tires free.

krasuskyp 05-28-2009 01:46 PM

Quote:

Originally Posted by equality72521 (Post 4689394)
As for stick? I'm actually worried about mechanical failure now because I'm able to torque the steering wheel so hard without breaking the tires free.


MUWHAhahahahahaa

8-)

I soooocannotwait. And they just look damn GNARLY - sidewall, tread design, compound. Yeeeha! I'm running them on my OE 7's & 9's. Let's see some pics of yours Mark...

eimkeith 05-28-2009 02:17 PM

pictures from someone, please?

edit - color me stupid, I'm on the wrong thread!

equality72521 05-28-2009 03:16 PM

http://forums.pelicanparts.com/uploa...1243548914.jpg
http://forums.pelicanparts.com/uploa...1243548926.jpg
http://forums.pelicanparts.com/uploa...1243548945.jpg
http://forums.pelicanparts.com/uploa...1243548958.jpg
http://forums.pelicanparts.com/uploa...1243548970.jpg
http://forums.pelicanparts.com/uploa...1243548980.jpg

equality72521 05-28-2009 03:27 PM

And did I mention they are sticky? ;) I pick up so many pebbles now I should probably undercoat the fender wells. It's like the old joke, "I can stop on a dime and pick it up"! lol

eimkeith 05-28-2009 05:54 PM

nice old school look on that sidewall. got any full side shots?

equality72521 05-28-2009 06:31 PM

Here you go.

http://forums.pelicanparts.com/uploa...1243560642.jpg

911st 05-28-2009 07:48 PM

Mark,

What rim widths and are you running any spacers?

Are you the guy with the 10" Fuchs?

Keith in Sacramento

911st 05-28-2009 07:50 PM

Mark, Sorry you already noted the stats earlyer.

Great set up.

equality72521 05-28-2009 08:10 PM

Quote:

Originally Posted by 911st (Post 4690107)
Mark,

What rim widths and are you running any spacers?

Are you the guy with the 10" Fuchs?

Keith in Sacramento

They are OEM 911 8" Fuchs in the front with 21mm spacers and custom 10" Gary Stratton Fuchs in the rear with 1/4" spacers.

krasuskyp 05-28-2009 09:16 PM

Oh hot dayum - sooooo wicked beyond cool. Tx for shooting / posting the pics, made my night (just walked inside from a total -s-hi-tshow of a Disco II rear pad / rotor abortion - wtf!?). I'll get mine back Mon / Tue and shoot some pics as well. I def. want to see a full on further away look too.

Niiiiiiiiice on the stickiness - and - hilarious on the undercoat. Be interesting to compare our shots with your 8/10's and my 7/9's.

That looks so damn badass it's not even funny. Amen on them looking period-correct.... classsssic.

Tx again for putting those up - will get me thru my weakend sans mine. Guards / Fuchs even!

equality72521 05-29-2009 04:57 AM

LOL, glad I could help make your day.

krasuskyp 06-02-2009 10:26 PM

The tires are thus far pretty damn cool. I'm tempted to never armor all them as the dry arse pencil eraser look is pretty tempting to rock. They're beefy and blocky and gooey and awesome as of yet. Way pscyhed by this yes. Pressures set to 29F/36R, and bump steer kit is a god send - makes the car driveable again after my lowering it last summer.

The rear bars wouldn't come out / cooperate apparently (sans more $ toward that effort), so the rear was lowered as much as could without their removal - I'd have liked a hair more down but ah well I'll 'suffer'.

Harold - here's my stats from today's completed tire mount, alignment, lowering, corner balance:

-0.7* / -0.9* front camber
-1.3* / -1.4* rear camber
0* front toe
.14* / .25* rear toe

corner weights, considering 1/2 tank fuel and 180lb. driver:

607 / 580 (F)
1001 / 926 (R)

fender lip heights:

24.5" / 25" (F)
25.5" / 25.78" (R)

HTH

Here's some pics:
http://forums.pelicanparts.com/uploa...1244005952.jpg
http://forums.pelicanparts.com/uploa...1244006672.jpg
http://forums.pelicanparts.com/uploa...1244006060.jpg
http://forums.pelicanparts.com/uploa...1244006154.jpg

more pics here if yer bored:

http://picasaweb.google.com/pkrasusky/930Tires#

911st 06-03-2009 07:27 AM

My Kumhos showed up today.

Tires look good on the 7&9's. I was worried they would look a bit like the were cantilevered but dose not seem to be the case.

I am a Little supplied as to the size of the two voids or channels in the center of the tire. That is 1" of the tire that dose not have rubber. The Dunlop Star Specs have a better ratio of rubber to voids.

Still, these tires are reported to out stick most or all the other tires in its class per Grass Roots Motorsports mag.

:)

Miguel Antonett 06-03-2009 07:33 AM

Those gaps will minimize aquaplaning.

willtel 06-03-2009 07:34 AM

Quote:

Originally Posted by krasuskyp (Post 4699365)
The tires are thus far pretty damn cool. I'm tempted to never armor all them as the dry arse pencil eraser look is pretty tempting to rock. They're beefy and blocky and gooey and awesome as of yet. Way pscyhed by this yes. Pressures set to 29F/36R, and bump steer kit is a god send - makes the car driveable again after my lowering it last summer.

Those are factory size Fuchs aren't they?

I desperately need new tires but I freakin' loath Kumho, I've owned 4 of them and replaced 3 early due to failure. Decisions, decisions...

Miguel Antonett 06-03-2009 07:36 AM

Try the Sumis, lots of value for the price...

krasuskyp 06-03-2009 07:59 AM

Quote:

Originally Posted by willtel (Post 4699792)
Those are factory size Fuchs aren't they?

I desperately need new tires but I freakin' loath Kumho, I've owned 4 of them and replaced 3 early due to failure. Decisions, decisions...

Yeppers - OE 7/9's

I'd give CUMho another chance. I ran 2 sets of 255/40/17Y MX's on my urS6 and loved those, and those were no where near the tire these things appear to be. No early failures, and, I beat the bag out of those poor sluts. Heck, the 1st set I scored gratis off my Evo XIII bud who'd DE'd the bejeezus out of them prior, and they still served me well.

911st (darn it whatz yer name! 8-))... I was slightly worried too about them rolling past the lip too far, but alas that isn't the case. Many more pics in my picasa link above that should alleviate any of your concerns. And those groves are great - my MX's sucked in wet above 80 big time, and there's soooo much block to the rest of the tire it'll be a non-issue. Plus like you said, GRM knows better certainly.

The tires really beef out the car in a much needed way, I'm psyched to be able to keep the OE Fuchs while finally being able to get a 'real' footprint under there. Nice steamroller profile from behind (well, relative - certainly not a 275 or 315 heh heh but still), and the sidewalls def give it the old school look.

They're fookin' TALL tho - stood my schmoke'd 245 Fuzion ZRi next to the 265 on the car before I left the shop and damn them online calculators aren't even close. Heck the Fuzion merely comes up to the top of the CUMho script! Yikes! I'll bet my speedo is majorly schwacked now - tho - not like I use the damn thing I just go as the road / car / situation deem fit heh heh. I'll have to use my GPS and see how far off it is. Tho prior it always seemed off anyway - I've always joked Porsche calibrates its speedos not in Miles Per Hour but Miles Per PORSCHE, as they always seem to read waaaay higher than what it feels.

Anywhoooo...

911st 06-03-2009 08:20 AM

I was running 225 that are 24.9" tall so the 25.4 is not that off. Side be side I can not find te differance but they are not mounted and inflated.

I only use these for nice days and track so watter is not a worry. Might trade them in on VictoRacers.

gumba 06-03-2009 08:20 AM

Paul,
Thanks for the specs. I would watch for uneven tire wear on the front. With .5d neg camber I'm getting 1/16" more wear on the outside of the tire after 4K miles. This is a 215/15 on a 8" rim. It looks like the stock camber plate is hitting the curvature of the body.

DDDD 06-04-2009 09:17 AM

Paul,

Your car looks to have a good stance. I would like to know how those tires hold up to your turbopalozza shenanigans.

Shadetree930 06-04-2009 10:12 AM

<----- is mounting Hankooks (Ventus R-S2 Z212 ) onto his car tomorrow. Am I going to be happy?

krasuskyp 06-04-2009 11:06 AM

Are you going to be happy? They're R compounds - 'nuff said 8-).

Thanks Dave - I'd like a hair more drop in the rear. Front's are fine. But it's def. acceptable, and, the pics exacerbate the height some as I always shoot car pics squated waaaaaaay down "on line" with the car. From 6' up, it looks pretty cool:

http://forums.pelicanparts.com/uploa...1244138692.jpg

I'll report back how they fare after turobPALOOZA shenanigans, fersure.

Shadetree930 06-04-2009 04:18 PM

Quote:

Originally Posted by krasuskyp (Post 4702415)
Are you going to be happy? They're R compounds - 'nuff said 8-).

True ... but any experience out there? Are Hankooks the way to go? Am I going to like them?

Miguel Antonett 06-05-2009 05:37 AM

Sorry, but I could not resist when talking squatting... This shot is from last Fall at WOT at the Dragon. See you soon!!!!


http://forums.pelicanparts.com/uploa...1244205463.jpg

krasuskyp 06-05-2009 06:13 AM

Niiiiiiiiice Miguel! But now you've gone 'n dun it... seeing that brown beaut again now will only lead to insult, mockery, and lynching should you show up in 3wks in the Cayman heh heh heh 8-). I gotta see that thing! You have a '79 IIRC, but also have ET phone home on rear lid (CHMSL)? Interesting.

Got some more WOT time (is there any other time?) in mine laaate last night, roads to mesself. Noting the 18mm taller tire does have a decided gearing effect - car seems longer leg'd... but also slightly more lag'y as result. Buttery smooth tho in power delivery and handling and ride. And with the alignment the car no longer feels like it's trying to axemurder me with the click of every 10th of mile. Muuuuuuuuch better. The 265s provide just the footprint to effectively keep the rears from roasting off now too which is a score, makes launches a no-wheel-hop affair heh heh.

Here's the tire calc I use - says my speedo should actually be reading lower than what I'm doing? SOOOOO feels the opposite of that from seat 'o pants, hmmm:

http://www.wheelsmaster.com/rt_specs.jsp?item=Wheel-Tire%20size%20comparer&showRim1=1&showTire1=1&sw1= 245&ar1=45&bd1=16&rd1=16&rw1=9.0&et1=-10&showRim2=1&showTire2=1&sw2=265&ar2=45&bd2=16&rd 2=16&rw2=9.0&et2=-10&text1=&text2=

willtel 03-22-2010 06:17 AM

I finally got my tires installed over the weekend and I can't say I'm not disappointed in them. The fronts rub like hell and they flat spot when cold making the ride like a paint shaker until they warm up.

Looks like I'm still tire shopping and IMO Kumhos still suck.

gumba 03-22-2010 06:51 AM

I run the Goodyear F1 GS-D3 on the street, and in the rain at our time trial events. For the track I find the Hoosiers (on our race car) to be the most consistent. I found the Kuhmo's V700 and BFG R-1 to be inconsistent as far as tire wear on the track. I thought the Goodyears had pretty good grip in a torrential down pour at one of our track events at Infineon. It was raining so hard I was the only one out there in a run group that usually has 20-25 cars.


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