HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Tire/wheels for track

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Tire/wheels for track

Post  bp944 on Tue Nov 06, 2012 10:04 am

I currently own a set of 17" turbo twist wheel set, 7 fronts and 8 rears. I do not have the ls1 but plan on getting it built this winter. I have an opportunity to buy another set of turbo twists for $450 so I could run all 8's on track and 7's on the road. Are 8's worth running on a track or should I wait for a set of 9's or larger? I do plan on run wider fenders in the front but probably not the rear.

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Re: Tire/wheels for track

Post  docwyte on Tue Nov 06, 2012 12:23 pm

I run 17x9 with 275's all the way round. That's with factory front fenders and no pulling in the rear. Works well!

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Re: Tire/wheels for track

Post  tooms351 on Tue Nov 06, 2012 12:29 pm

Hey Doc, are you running early offset wheels? I just picked up some used 275 17 continental slicks for the rear to try out. I was gonna go 245 in the front but if I can fit 275............
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Re: Tire/wheels for track

Post  docwyte on Tue Nov 06, 2012 12:32 pm

Nope, 17x9 ET55 OEM Cup 2 wheels. I do run -3 camber, but I fit the 275's without any issues.

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Re: Tire/wheels for track

Post  tooms351 on Tue Nov 06, 2012 12:34 pm

Rats!
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Re: Tire/wheels for track

Post  bp944 on Tue Nov 06, 2012 1:43 pm

Are those 275's slicks or street tires? I assume your front fenders are rolled.

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Re: Tire/wheels for track

Post  docwyte on Tue Nov 06, 2012 1:55 pm

Race tires. Nope, no modifications to the front fenders, but my car was a Turbo S, so it came from the factory with rolled fenders.

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Re: Tire/wheels for track

Post  marc a on Tue Nov 06, 2012 8:46 pm

If you do not mod the rear, 275 is as large as you can go no matter what you do to the front. Do what Doc is running unless you go with front and rear flares then you can do 295 square on 18 x 10 rims or larger in the rear if you want.

Marc
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Re: Tire/wheels for track

Post  docwyte on Wed Nov 07, 2012 8:09 am

Well, I could fit a 295 in the back without modding anything. My street tires are 285's and they fit fine. However I can't fit a 295 up front without doing flares or something, that's why I run 275's all the way round...

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Re: Tire/wheels for track

Post  marc a on Wed Nov 07, 2012 10:20 am

Interesting . . . I tried my wheels and tires (Hooser R6) on the rear before chopping it up and they would not fit. I have the '86 offset arms and tried different spacers with out luck. Maybe 295 Hoosiers on 10" rims spread out . . . not sure.
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Re: Tire/wheels for track

Post  bp944 on Mon Nov 12, 2012 2:27 pm

Would a set of 17x9 turbo twists fit in the rear with et15? I have a late offset car and I'd love to run 275's.

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Re: Tire/wheels for track

Post  docwyte on Mon Nov 12, 2012 3:11 pm

Nope, that's the wrong offset. You want an offset of 55-65.

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Re: Tire/wheels for track

Post  bp944 on Tue Nov 13, 2012 3:59 pm

So what is the widest OEM porsche wheels that you can get square? Can you get a 10 inch carrera III's on the front? I've been told you want a square setup on the 944 due to it pushing but does that hold true for a ls1 powered car? Basically what I'm looking for is the cheapest way to get wide rubber on my late offset 944 and there seems to be quite a few guys in my area swapping OEM rims for blinged chrome stuff.

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Re: Tire/wheels for track

Post  docwyte on Tue Nov 13, 2012 4:01 pm

Not sure if you can fit a 10" wide wheel in the front. It'll fit in the back.

I run 17x9 OEM Cup 2 ET55 wheels front and back with 275-40-17 tires.

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Re: Tire/wheels for track

Post  marc a on Tue Nov 13, 2012 7:47 pm

bp944 wrote: I've been told you want a square setup on the 944 due to it pushing but does that hold true for a ls1 powered car?

This is true for any 944, power notwithstanding. Before the turbo came into production all the 944s came square from the factory.

If you are looking for track wheels and not concerned with weight (i.e. not racing) there are many good knock-offs from Italy that can be found for 400-500 a set if you want 18x10s. Price goes up for 11s and 12s.

Another source for wheels are from the Cayenne as they usually have 55 or 54 et setoff. I have 2" spacers on the rear of my '86 arms with 54 et wheel.
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Re: Tire/wheels for track

Post  Rich L. on Wed Nov 14, 2012 10:45 am

My setup is 255/40 track tires on 17x9" ET55 wheels front and back. I use the CupII wheel from the back of the 993, have 6 of them. The 255 BFG R1 is a 10" semi-slick and is happiest on a 9" wheel. I run a 15mm spacer in back and use the 3mm wider M030 hubs in front. It's setup with just over -2* camber up front and just under in back.



Stance looks great and the square setup is sweet on the track.

Rich
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Re: Tire/wheels for track

Post  scryfst on Sun Nov 24, 2013 8:16 pm

I know that a 18x10 will fit stock config with a 285 on all four corners. Although a custom offset is needed.
The guys at CCW wheels set me up and this is info they shared with me.
I run 18x10 w/295 on the front
and 18x12 w/335 rear.

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http://www.widerstandsfahig.com

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Is 7.5X18 10X18 a good choice for a street/ maybe track

Post  944-v8 on Wed Oct 22, 2014 11:37 pm

Hey Guys: I have 7X17 and 9x17 wheels right now with basic Porsche tires. I have an opportunity to buy the following with a set of 225's and 285's:
Rim Width:
7.5 (Front) 10 (Rear)
Rim Manufacturer Part Number:
993.362.134.06 / 993.362.140.04
Offset:
ET 50 (Front) ET 65 (Rear) Rim Diameter:18  Number of Bolts:  5
Quantity: Set (4)
Rim Brand: Porsche

I don't know if the 285's will fit. I have coil overs if that makes a diff all around. I would roll the fenders if that is absolutely necessary, maybe even if not necessary. Would I need any type of spacers?
I read a lot of discussions on the forum about squaring the tire sizes. I have an Lt1 that will maybe make 375 HP. Will this configuration tend to push to much either on the street or track days. Since I have sway bars and adjustable coils it may be possible to compensate. Their are much smarter people here than me. I just don't want to make a stupid mistake. Maybe just putting bigger tires on my 17" rims is all I need. I know someone will ask how will I use the car. Mostly street but I get crazy at times. I just want a well balanced car that is predictable  Very Happy

Suggestions/thoughts.

Thanks

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Re: Tire/wheels for track

Post  Lemming on Thu Oct 23, 2014 7:42 am

One cannot say for certain that the car would push with that setup, it really depends on your spring rates and sways front to back. I would not want to run with a 225/285 setup as I think that's far too much of a difference to try to fix the inherent push. Personally, I would find another set of 9x17's to match your rears and run a square setup with either 255s (more street oriented) or 275s (more track oriented).

Tell us more about your suspension setup, specifically spring rates.
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Re: Tire/wheels for track

Post  docwyte on Thu Oct 23, 2014 8:33 am

You can fit 285's in the back, however as mentioned previously the car will inherently push with that large of a stagger.

Go with the previous recommendations.

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Re: Tire/wheels for track

Post  944-v8 on Thu Oct 23, 2014 9:51 am

As far as set up. Koni with 350 # front  adjustable height. Qa1's and 500# rear. Total torsion bar removal. 18mm rear sway bar 27.8mm front bar. This probably a bit stiff for street and a little weak for the track.Sound like a compromise would be 255X275 for mostly street or 255x255. I appreciate the thoughts.
Thanks again.

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Re: Tire/wheels for track

Post  docwyte on Thu Oct 23, 2014 10:03 am

I've got 450 front, 700 rear with no torsion bars, 968 M030 sway bars and I run 275's all the way round on the track on 17x9 wheels. Car is pretty neutral, but I can adjust the tail with the throttle

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Re: Tire/wheels for track

Post  944-v8 on Thu Oct 23, 2014 10:17 am

Thanks Docwyte: That's encouraging. Your setup is obviously for the track but it means with the 17x9's I can certainly get neutral without a lot of pain. Consensus seems to be grab another pair of 17x9's and call it a day. Very Happy The other advantage of the 17" wheels is the side walls are a little taller and less likely to bend a rim hitting a pothole.

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Re: Tire/wheels for track

Post  docwyte on Thu Oct 23, 2014 10:44 am

Car is surprisingly comfy on the street. I do drive it to the tracks and around town. If I was doing a straight track setup I'd do 700 front and 800 rear...

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Re: Tire/wheels for track

Post  Lemming on Thu Oct 23, 2014 12:54 pm

docwyte wrote:Car is surprisingly comfy on the street.  I do drive it to the tracks and around town.  If I was doing a straight track setup I'd do 700 front and 800 rear...

I can't imagine driving my car on the street, 900 lb springs front and back What a Face
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Re: Tire/wheels for track

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