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drag racing the short bus
Join Date: May 2002
Location: Location, Location...
Posts: 21,983
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205-50-15s on 15x8 - your thoughts?
Tire rack lists that the maximum width for 205-50-15 Yokohamas as 7.5 inches. Because of a rubbing issue with the 225-50-15s I now have on my car, I've been thinking of installing a spare pair of 205-50-15s on the 8-inch rims.
I know that the tire width will be about a half-inch less in diameter, but the sidewall would be stiffer, and turn-in sharper - which would be a plus IMO. Otherwise, what would be the negatives? TIA
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The Terror of Tiny Town |
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04-27-2004, 10:30 AM
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Information Junky
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,189
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Re: 205-50-15s on 15x8 - your thoughts?
I think you had better stay away from curbs.
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Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong. Disclaimer: the above was 2¢ worth. More information is available as my professional opinion, which is provided for an exorbitant fee. 
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04-27-2004, 11:46 AM
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Registered
Join Date: Jul 2001
Location: Connecticut
Posts: 1,942
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There is the potential for the tire bead to pull inwards when compressed if the rim is not wide enough. Also if you should hit a pot hole, road transition, etc. the normal compression and rim protecting tire bulging that the tire sees will not happen. The pothole, transition, etc will impact the rim.
Put them on and see what it looks like. Perhaps some others here have installed a 205 on an 8" rim.
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'83 SC |
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04-27-2004, 11:58 AM
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drag racing the short bus
Join Date: May 2002
Location: Location, Location...
Posts: 21,983
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Re: Re: 205-50-15s on 15x8 - your thoughts?
Quote:
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The Terror of Tiny Town |
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04-27-2004, 12:01 PM
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Believe the tire engineers. They are conservative but for a reason
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Bill Verburg '76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone) | Pelican Home |Rennlist Wheels |Rennlist Brakes | |
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04-27-2004, 12:10 PM
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Stay away from my Member
Join Date: Aug 1999
Location: Agoura, CA
Posts: 5,773
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205's are just about perfect on 7's.
It sounds like your quest for 8's just may not be "meant to be". Or...you just need to pull and roll those fenders more 
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Chris C. 1973 914 "R" (914-6) | track toy 2009 911 Turbo 6-speed (997.1TT) | street weapon 2021 Tesla Model 3 Performance | daily driver 2001 F150 Supercrew 4x4 | hauler |
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04-27-2004, 10:34 PM
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Registered
Join Date: Nov 2001
Location: a few miles east of USA
Posts: 3,393
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sounds a tad small - why not try a different make/size?
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Rich  '86 coupe "there you are" |
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04-27-2004, 10:37 PM
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Somewhere TireRack also mentioned that there are several occurences where car makers have approved 1/2 over or undersize tires with repect to the rim width guidance from tire makers. I think you should be ok.
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1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
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05-02-2004, 04:32 AM
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drag racing the short bus
Join Date: May 2002
Location: Location, Location...
Posts: 21,983
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Dave at TRE ran 205s on 8s for a while; said it worked quite well on the track.
Chris: I'm really not too concerned. The 8s will stay as will the 225s. The rubbing is not shredding the tire apart, so I'll be alright for a while. I've got some suspension sorting to do, so we'll see what happens after that. In short, there's more than one way to skin a 911 cat.
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The Terror of Tiny Town |
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05-02-2004, 03:03 PM
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1976 Porsche Carrera 3.0
1995 Porsche 993 Carrera Coupe
1974 Porsche 911 Targa 3.6
