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3/29/10 5:43pm - Original Message: 'Tire Size'
tinbender
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edgwood, MD - USA

Vette(s):
1975 convertible,with the hard top and power streering.it a 350 L48 with auto trans. the color is light blue.

Joined: 11/1/2007
Posts: 736
What the correct tire size to use on a C-3:225x70-15 or 225x60-15?
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3/29/10 6:06pm - Reply: 'Tire Size'
KDADDY79
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Dutchess County, NY - USA

Vette(s):
White '79 Corvette. It's a driver.

Joined: 8/27/2007
Posts: 2484

I'm pretty sure the 225/70-15 is the standard size. An optional size on the later C3's was 255/60-15. The 255's seem most common from what I see.

I have the 225's on my '79. I went with them to not have to deal with fitment issues.
I'm sure others will weigh in on this.
Kevin


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3/29/10 9:59pm - Reply: 'Tire Size'
Jaws79 Lifetime Member
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Sykesville, MD - USA

Vette(s):
1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops

Joined: 4/27/2008
Posts: 4211
Rick in '78 I believe they changed the wheel wells to fit the 60 series tires. The earlier cars used the 70 series tires. Some say you can use the 60s on the earlier models but you may have to trim the wheelwell.
 
Barry
 
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3/29/10 10:11pm - Reply: 'Tire Size'
JC VETTE 70
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, - Canada

Vette(s):
70 VETTE 350/300HP, AUTOMATIC, ALL STOCK EXCEPT FOR MILD CAM,LAGUNA GREY, 3:55 POSI GEARS

Joined: 3/9/2008
Posts: 159
I put 255/60/15 in the rear and 245/60/15 in the front. People have told me 255 in the front will be to close to the wheelwell. If you hit a pump while you are turning the tire can hit the top of the wheelwellOuchcausing big repaires to the bodyCensored 

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3/29/10 10:17pm - Reply: 'Tire Size'
wetvet
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Lake Oswego, OR - USA

Vette(s):
1972 Steel Cities Gray T Top. Original Owner, Original Paint and Interior. The running gear has been rebuilt after 240,000 miles.

Joined: 10/17/2003
Posts: 540
I have 255/60/15 on all 4 corners of my Vette. All works well even in tight turns.

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3/29/10 10:20pm - Reply: 'Tire Size'
dskopp
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190hp. PS, PB (SS), A/C CC, T-Tops, Going to remain as Stock as possible. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vetts Car Club. 175,000 Original miles!!

Joined: 5/21/2008
Posts: 1956
My 81 Has the Goodyear 225 70 R 15 front and back.  Good riding tire.   If your gonna hit a bump, do it streight on !!!!Embarrasseddskopp2010-03-29 19:22:09

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3/30/10 10:11am - Reply: 'Tire Size'
Gunslinger
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Frederick, MD - USA

Vette(s):
1969 convertible L71 427/435 4-speed black interior

Joined: 9/8/2003
Posts: 3398
1968-1972 used F70-15...todays's reference size is P215/70R15.
1973-1978 used GR70-15...today's reference size is P225/70R15.
1978-1982 used P225/70R15 with P255/60R15 as optional.

60-series tires will fit some pre-'78 cars on a car by car basis.  Some have had clearance problems, some haven't.


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3/30/10 11:09am - Reply: 'Tire Size'
VetteSpecialties
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Mounds View, MN - USA

Vette(s):
70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe

Joined: 5/24/2007
Posts: 1031
My '71 big block car has 255/60/15s all around.  It also has freshly rebuilt suspension and new springs, which makes a big difference.

Larry


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3/30/10 11:50am - Reply: 'Tire Size'
aceinthehole Lifetime Member
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Valley Springs, CA - USA

Vette(s):
1978,Metalic Money Green W/Gold emblems,TH350 w/gear splitter,black & grey interior.1978,two tone,Metalic Rootbeer & gold ,Doeskin interior,auto. trans. 1981, Silver w/mirrored T-Tops,4 spd, charcoal interior.

Joined: 11/20/2005
Posts: 3618
I too have the 245/60s on the front of the wifes car and 255s all around on my '81, but ours are all newer types cars so,.......no issues with these sizes.  

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3/30/10 2:00pm - Reply: 'Tire Size'
81zoomzoom
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Lusby, MD - USA

Vette(s):
1981 WHITE ALT WITH ALL THE BELLS

Joined: 10/18/2003
Posts: 56
My tire guy say 225/75r15 are way better.   There 1/4 inch taller.  He says its got stronger side walls.    I havent tryed them yet.    I have 255/70r15 now.    there BF Goodrich.  There way better than the junk the car had when I got it.  

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3/30/10 11:45pm - Reply: 'Tire Size'
tinbender
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edgwood, MD - USA

Vette(s):
1975 convertible,with the hard top and power streering.it a 350 L48 with auto trans. the color is light blue.

Joined: 11/1/2007
Posts: 736
I have 225x70-15's on my car,and I saw a post here where someone mentioned 225x60's.So I figured I just check.With some of the micky mouse things I found done to my caar I wanted to be sure things were right.
                      Thanks everyone  Rick


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4/1/10 9:09am - Reply: 'Tire Size'
chances r Lifetime Member
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spicewood, TX - USA

Vette(s):
Sold them Both

Joined: 9/13/2009
Posts: 72
I have no clearance issues with the 255/60 15's.  But I have major suspension upgrades, which gave me room for error in ride height adjustments.  Have not gotten to the stock version car yet so I do not know what issues I would have there.  Now I am curious if it is gonna be an issue.

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4/1/10 12:48pm - Reply: 'Tire Size'
81zoomzoom
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Lusby, MD - USA

Vette(s):
1981 WHITE ALT WITH ALL THE BELLS

Joined: 10/18/2003
Posts: 56
 Just thinkin guys.  I saw a post about spare tires. One of you said Gm  would not have made it so the flat wouldnt fit in the tire tub.   I tryed real hard  and a  225/70r15  wont fit.  HAD TO GO IN FRONT SEAT. I was mad too   You know a flat never happens at a good time.

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4/1/10 1:09pm - Reply: 'Tire Size'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
Charlie, the tire tub on our Sharks have to be adjusted down a bit to fit a 225 sized tire in them, but they are all adjustable. In fact, your '81 is easier than my '74 to adjust. From '78 up, the tubs had a slotted front mount for the tub that can be slid down to fit the full-sized tire. The original spare was a space saver spare, so it was waaay smaller than the road tires to start with. The engineers designed the tub the drop down in order to fit the road tire in there in place of the space saver.
I had some pics somewhere that showed how to adjust the earlier tubs. If someone here has a '79-up owner's manual, they could copy & post the page in it that shows how to drop the tub down for the larger tire...


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4/1/10 3:28pm - Reply: 'Tire Size'
81zoomzoom
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Lusby, MD - USA

Vette(s):
1981 WHITE ALT WITH ALL THE BELLS

Joined: 10/18/2003
Posts: 56
    Thanks  Adam.   Ill check this weekend.   Boy was I mad, got all wet and dirty.   I need a new tub anyway  mine got hurt when the wheel came off.

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4/1/10 7:37pm - Reply: 'Tire Size'
tinbender
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edgwood, MD - USA

Vette(s):
1975 convertible,with the hard top and power streering.it a 350 L48 with auto trans. the color is light blue.

Joined: 11/1/2007
Posts: 736
My spare is a 225x70 -15 and it fit in the tub on my 75.Only problem I am going to have with that is my new tires are going to be Firestones.(The spare is a brand new BFG)Oh wellLOL
                              Rick


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4/1/10 11:03pm - Reply: 'Tire Size'
Jaws79 Lifetime Member
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Sykesville, MD - USA

Vette(s):
1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops

Joined: 4/27/2008
Posts: 4211
Firestones are the best, Rick! I love mine! ( although mine are 255/60-15 )
 
Barry
 
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4/4/10 1:01pm - Reply: 'Tire Size'
81zoomzoom
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Lusby, MD - USA

Vette(s):
1981 WHITE ALT WITH ALL THE BELLS

Joined: 10/18/2003
Posts: 56
    Hi ADAM    Just looked at my spare tire and read owners book.  The book says road tires have to be flat??   I cant see what you are saying.     I'm getting a used tub maybe it will work. 

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4/4/10 8:53pm - Reply: 'Tire Size'
ebo Lifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4395
  my new tires are going to be Firestones.(The spare is a brand new BFG)Oh wellLOL
                              Rick
[/QUOTE]
Well if you have a flat it will only look odd for a short while.
Barry is right about the indy 500's I love mine. At first the look is a bit different as it not the pinstripe letering look the goodyears were. But the solid look grows on you, and they are rated at the top of the charts. They sure held great with only a 100 miles or so on them when we threw it into turn one at Watkins Glen.....
can you say "sticker tires"LOL
Evil Smileebo
ebo2010-04-04 17:56:20

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4/5/10 8:52pm - Reply: 'Tire Size'
tinbender
Former Member
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edgwood, MD - USA

Vette(s):
1975 convertible,with the hard top and power streering.it a 350 L48 with auto trans. the color is light blue.

Joined: 11/1/2007
Posts: 736
Naw the bubba at the tire shop put the white letters on the inside,so if I get a flat you'll see the black wallsLOL

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