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Registered User
Join Date: Dec 2008
Posts: 164
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Front tires: 205 or 225?
Till now, I've always had 205 tires in front but as I have to change them, I was wondering if 225s would maybe be worth trying. What are the opinions?
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07-02-2012, 07:14 AM
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Smart quod bastardus
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Go for it. More rubber in front is pretty easy on the 930 as clearance to the fenders is alot more than an 911SC or Carrera.
You could also go bigger in the rear tires as well really easily provided the rims are sized accordingly. Try to keep the stagger consistent between front and rear sizes to keep the handling fairly neutral, meaning a 225 front and 245 or 265 rear would be ok. Factory was 205 front 225 rear I think for this reason.
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1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, full bay intercooler, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.95 bar max ---"When you're racing it's life! Anything else either before or after, is just waiting" |
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07-02-2012, 11:14 AM
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Registered User
Join Date: Jan 2007
Location: Melbourne, Australia
Posts: 1,581
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Don't do it!
I had some 225s fitted about a year ago because I couldn't get TR1s in 205, they had just discontinued them. I noticed straight away the steering felt spongier, felt like turn in, responsiveness, everything suffered, I messed with tyre pressures and had the car re aligned by the local Porsche shop to no avail. I drove on them for a while and just got used to it.
A fellow Pelican member Vas told me he had a fresh set of 205s he didn't want and generously gave them to me. Took me time to get around to changing them until recently. When I got the car back it just felt sooooo much better, it was another car, apart from the fact they look so much better, I hated the way the 225s bulged out. I would say in conclusion you can run 225s but if you have access to 205s use them instead, 225s are just too wide IMO for 7s and the sidewall bulk effects handling and I don't like the look. On this pic you can see the 225s, look at how the 245s sit correctly on the back and the 225 really protrudes. 
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'89 911 M491+Turbo '89 944 Turbo '88 928S4 '18 C63S Coupe |
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07-02-2012, 04:20 PM
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83 911 Production Cab #10
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Post a pics of your 205 as they fit now.
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Who Will Live... Will See  83 911 Production Cab #10, Slightly Modified: Unslanted, 3.2, PMO EFI, TECgt, CE 911 CAM Sync / Pulley / Wires, SSI, Dansk Sport 2/2, 17" Euromeister, CKO GT3 Seats, Going SOK Super Charger |
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07-02-2012, 04:38 PM
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Registered
Join Date: Jan 2004
Location: Northern Virginia
Posts: 3,324
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225 = heavier feeling steering, especially as the tread wears down. harder parallel parking.. more likely to follow ruts in the road and be impacted by the crown of the road, Less understeer.
205 = small.. easy to turn/steer. Will understeer more than 225s. Early cars ran 205/225. Later cars ran 205/245, i think because they went from 8" rears to 9" rears sometime around 1984? Keeping 205s in front helped reduce lawsuits 
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1970 914-6 1987 924S Past: 2000 Boxster 2.7, 1987 944 1978 911SC, 1976 914 2.0, 1970 914 w/2056 |
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07-02-2012, 05:23 PM
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Registered User
Join Date: Dec 2008
Posts: 164
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Ok thanks, I'll keep 205s.
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07-04-2012, 03:05 AM
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Registered User
Join Date: Jan 2007
Location: Melbourne, Australia
Posts: 1,581
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Quote:
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'89 911 M491+Turbo '89 944 Turbo '88 928S4 '18 C63S Coupe |
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07-04-2012, 04:15 AM
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83 911 Production Cab #10
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Quote:
That was for 930cab89 but we'll look forward to see your pics  Winter!!! Here is our winter look like: 
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Who Will Live... Will See 83 911 Production Cab #10, Slightly Modified: Unslanted, 3.2, PMO EFI, TECgt, CE 911 CAM Sync / Pulley / Wires, SSI, Dansk Sport 2/2, 17" Euromeister, CKO GT3 Seats, Going SOK Super Charger |
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07-04-2012, 07:18 AM
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