| View previous topic :: View next topic |
| Author |
Message |
Aussie Jase
Joined: 16 Jan 2015
Posts: 17
Location: New York
|
 Posted: Wed May 13, 2015 12:25 am Post subject: How to run 225/45R15 tires on 924S |
 |
|
Hi guys,
The 205/50 R15 tires that I'm currently running look pretty darn close to the spring but I really want to run 225/45 R15 Toyo or Hoosier tires in PCA 944 Cup. Running phone dial rims.
What mods do I need to do? Will a wheel spacer suffice or do I need a smaller coil spring?
Many thanks.
_________________
1987 924S 24hr LeMons car  |
|
| Back to top |
|
 |
Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
|
|
| Back to top |
|
|
Brockoli
Joined: 06 Feb 2007
Posts: 621
Location: Edmonton, Alberta, Canada
|
| Posted: Wed May 13, 2015 2:28 am Post subject: |
|
|
I have run 225/50ish/16 front and 245/45/16 rear on late turbo phone dials. All you need is the factory rear (21mm?) spacer. Front doesnt rub on my weltmeister springs.
the phone dials are 7" front 8" rear with a 52mm offset
_________________
'80 924 M471,Wideband O2, Full coilover susp,23/19 sways,Bilstiens,KLA Strut Brace,Roll Bar,Test Pipe,BBS RS, Willwood BBK
25% of a '87 944 Chumpcar http://straightpipe.ca/forums/showthread.php?t=2454
'79 924 Sebring Edition(Sitting) |
|
| Back to top |
|
|
Aussie Jase
Joined: 16 Jan 2015
Posts: 17
Location: New York
|
| Posted: Wed May 13, 2015 3:16 am Post subject: |
|
|
Coilovers aren't an option to keep it lemons happy.
_________________
1987 924S 24hr LeMons car |
|
| Back to top |
|
|
Brockoli
Joined: 06 Feb 2007
Posts: 621
Location: Edmonton, Alberta, Canada
|
| Posted: Wed May 13, 2015 3:21 am Post subject: |
|
|
keep in mind different brands will have different widths even though they are all advertised as 225's.
the old yokohama avs 245's were wider than the bridgestone re-11 245's
_________________
'80 924 M471,Wideband O2, Full coilover susp,23/19 sways,Bilstiens,KLA Strut Brace,Roll Bar,Test Pipe,BBS RS, Willwood BBK
25% of a '87 944 Chumpcar http://straightpipe.ca/forums/showthread.php?t=2454
'79 924 Sebring Edition(Sitting) |
|
| Back to top |
|
|
Raceboy
Joined: 01 Mar 2004
Posts: 2327
Location: Estonia, Europe
|
| Posted: Wed May 13, 2015 3:27 am Post subject: |
|
|
Brockoli is right.
225 will fit but you need to check the tire width before buying them. 225 is just indicative, the real width will vary from manufacturer to manufacturer by a lot! There are 225's that are narrower than 205's and there are 225's that are wider than 245.
Most likely you will need to play with camber to get the best clearance of the tire vs fender and spring. 225/45 is good choice because of its less overall diameter -> less chance of rubbing.
For the reference, I just bought brand new tires for my white 924 2.5 16v and the front 215/40 were as wide as previous Michelin 225/40 18, rears (255/35 R18) from the same manufacturer were same width as previous 245/35 R18 Pirellis. Go figure...
_________________
'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold 
'84 924, turbocharged, sold.
http://www.facebook.com/vemsporsche |
|
| Back to top |
|
|
fiat22turbo
Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR
|
| Posted: Wed May 13, 2015 3:27 am Post subject: |
|
|
| Aussie Jase wrote: |
Coilovers aren't an option to keep it lemons happy. |
Then use the coil overs for Porsche cup and cheap shit for LeMons or take the penalty hit and understand that LeMons is about having fun on track.
Besides cheap eBay coil over sleeves are stupidly cheap, it's the shocks that are expensive and the tech inspectors should bloody well know that.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
|
| Back to top |
|
|
Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
|
| Posted: Wed May 13, 2015 3:52 am Post subject: |
|
|
| Aussie Jase wrote: | | Coilovers aren't an option to keep it lemons happy. |
Oh, I thought you said 944 Cup.
_________________
Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
|
|
| Back to top |
|
|
Aussie Jase
Joined: 16 Jan 2015
Posts: 17
Location: New York
|
| Posted: Wed May 13, 2015 4:44 am Post subject: |
|
|
| Rasta Monsta wrote: | | Aussie Jase wrote: | | Coilovers aren't an option to keep it lemons happy. |
Oh, I thought you said 944 Cup. |
Would like to do both...
_________________
1987 924S 24hr LeMons car |
|
| Back to top |
|
|
KDJones2000
Joined: 14 Sep 2010
Posts: 322
Location: Phoenix, AZ
|
| Posted: Wed May 13, 2015 6:27 am Post subject: |
|
|
I was able to just fit RA-1's for 944 Spec on my 924S stock setup with 10mm spacers. Very little clearance to the spring, but enough.
I have since moved over to coilovers, and will be taking the value hit in Chumpcar. I think it will cost me 4 laps for those and the other cheaty bits on the car (oil cooler, torsion bars, steam vent kit, etc.).
_________________
1987 924S SPEC car
Team Toofah Racing
1988 944 Turbo S |
|
| Back to top |
|
|
Grenadiers
Joined: 20 Feb 2007
Posts: 3222
Location: Nelson, WI & Prescott, AZ
|
| Posted: Wed May 13, 2015 7:08 am Post subject: |
|
|
Which pales in comparison to the Miata and E30/6 cheaters~!
_________________
'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke |
|
| Back to top |
|
|
fiat22turbo
Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR
|
| Posted: Wed May 13, 2015 7:24 am Post subject: |
|
|
| KDJones2000 wrote: | I was able to just fit RA-1's for 944 Spec on my 924S stock setup with 10mm spacers. Very little clearance to the spring, but enough.
I have since moved over to coilovers, and will be taking the value hit in Chumpcar. I think it will cost me 4 laps for those and the other cheaty bits on the car (oil cooler, torsion bars, steam vent kit, etc.). |
Oil cooler and coil overs with Koni's could be argued that they are factory options (they were offered on some 944's) Same with the torsion bars if they are factory pieces.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
|
| Back to top |
|
|
fiat22turbo
Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR
|
| Posted: Wed May 13, 2015 7:26 am Post subject: |
|
|
| Grenadiers wrote: | | Which pales in comparison to the Miata and E30/6 cheaters~! |
Most aren't cheating, their chassis are just better developed and perform quite well out of the box with mixing and matching factory parts. So fight fire with fire and go hunt down M030, Turbo and other factory parts.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
|
| Back to top |
|
|
Grenadiers
Joined: 20 Feb 2007
Posts: 3222
Location: Nelson, WI & Prescott, AZ
|
| Posted: Wed May 13, 2015 9:01 am Post subject: |
|
|
I know, we just categorically hate them~! Amazing to see how an E30 can get a weight reduction, there's hardly anything left of anything BMW.
_________________
'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke |
|
| Back to top |
|
|
Aussie Jase
Joined: 16 Jan 2015
Posts: 17
Location: New York
|
| Posted: Mon May 18, 2015 12:53 am Post subject: |
|
|
Ok you guys win, will purchase the coilover kit from Paragon Parts tomorrow.
My next question, what spring rate?
Tires will be 225/45R15 BFG Rivals for lemons and Toyo R888's for track days/DE. Sway bars are 25.8mm front and 19mm adjustable with the 25mm torsion bars, more or less MO30/968 stuff.
Is 250lb going to be enough? Need the car to be easy to drive for my in laws as well as myself and bro-in-law to push at nine tenths.
Cheers, J
_________________
1987 924S 24hr LeMons car |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
924 FAQ (Technical)
