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Car Forum / Antique and Collectibles / Studebaker / March 2005tires for '55 coupe
I've been offered a free set of almost new 205/70 radials, are those too short to work properly? I think they'll be OK width wise as they are not a performance tire and I have the 5" wide wheels. I'm guessing that these probably wouldn't work at all on the 4.5" wheels for my '62 Daytona? thanks for any input nate > I've been offered a free set of almost new 205/70 radials, are those > too short to work properly? I think they'll be OK width wise as they > are not a performance tire and I have the 5" wide wheels. > > I'm guessing that these probably wouldn't work at all on the 4.5" > wheels for my '62 Daytona? I'm thinking that '55 Commanders came with 7.10x15 tires. That would cross to 215x75x15. A 205x70 would be equivalent in height to a 195x75x15. That would be ok for a six-cylinder Lark, but maybe a bit short for your car. They would definitely throw off your speedometer. The 70 width probably wouldn't be a problem. Years ago I ran F70s on an Avanti with the five-inch wheels with no problem. Paul Johnson Hey Paul...the 70 is the sidewall height, not the width. The 205 is the width (in mm). The sidewall height would be 70% of 205 or 143.5 mm. I have 205 70's on the front of my '54 on 6" wheel with 3" backspacing. They don't hang up on anything even though I've got about one coil cut out of the front springs. 215 75's on the rear on the same wheels and they don't rub either. I'm not sure what you mean, Nate, by "work properly". I think they'd fit a 5" wheel OK (I had 205 75's on 5" Stude wheels on my '62 Lark wagon with no problem). I think they'd look OK also (IMHO). 75 series might look more "stock". 60 series tires might start to look a little funny on your '55 at stock ride height. -Dick- > Hey Paul...the 70 is the sidewall height, not the width. The 205 is > the width (in mm). The sidewall height would be 70% of 205 or 143.5 > mm. Uh... OK. What you are saying is the tread on a 205 70 is the same width as a 205 75? I knew that the diameter was smaller, but I thought....duh! So that means a 205 60 is the same width as a 205 75. Gee, I sure liked it better when all we had to worry about was one number (like 6.70 vs 7.10, etc.) > I have 205 70's on the front of my '54 on 6" wheel with 3" backspacing. > They don't hang up on anything even though I've got about one coil cut > out of the front springs. Your car didn't appear to have any significant rake. Did you cut the springs to allow for the lighter engine you have in it? > 215 75's on the rear on the same wheels and they don't rub either. My friend Darrell Carr has a '55 Champion which runs 225x75x15s on stock rims all around and he has no rubbing issues. Paul Johnson The first # is the tread width, so (in theory) a 205 75 is the same width as a 205 50 (that being 205 mm wide). The cut springs was mostly to get the car lower than stock in front, (although it certanily would have looked "nose bleed" high in front without any cutting. I know a stock SBC is somewhat lighter than a Stude V8, but mine is probably quite a bit lighter with tubular headers, aluminum intake, aluminum bell and trany, etc) Running the shorter tires on front also gets it lower in front. -Dick- > Running the shorter tires on front also gets it lower in front. > > -Dick- And there's no such thing as being too low in the front.<G> (drop it 'til it scrapes, drive it 'til it wears off)  Signaturethanks, Jerry Forrester remove 'no spam' to respond >>Hey Paul...the 70 is the sidewall height, not the width. The 205 is >>the width (in mm). The sidewall height would be 70% of 205 or 143.5 I have Black Diamond 225/15-70 or 75's on my GH and have had no prolems.. I did a 2 5/8 white and now wish I had gone way over the 3 inch to get that real wide white look/ BG ddstn...@earthlink.net wrote: > Hey Paul...the 70 is the sidewall height, not the width. The 205 is > the width (in mm). The sidewall height would be 70% of 205 or 143.5 [quoted text clipped - 13 lines] > > -Dick- Well IME the lower aspect ratio tires tend to have wider treads, even for the same nominal width. I don't know what make or model these tires are just that they only have a couple thousand miles on them and they are all season radials and the price is right :) (I just have to put some junk tires on the car before the junkyard guy comes to get it.) nate > Well IME the lower aspect ratio tires tend to have wider treads, even > for the same nominal width. I don't know what make or model these [quoted text clipped - 4 lines] > > nate Different manfacturers will have different tread widths on the same size tire. Also the same size tire from different mfgs. will measure slightly different. A 205-75R 15 tire will measure about 8.071 inchs (205mm) across the tire. It will be about 6.05 inchs (75% of the 205mm) from the ground to the rim. It will be about 27.11 inchs (205 divided by 25.4, times 75%, times 2, plus 15, equals 27.11) total hight. thanks, Jerry Forrester remove 'no spam' to respond I currently have my spare on the left front of my cruiser with a 205/70 on a mopar 5 1/2 rim. looks fine, works fine, just looks a little small. 8E12T6 1963 64 Cruiser pwb I currently have my spare on the left front of my cruiser with a 205/70 on a mopar 5 1/2 rim. looks fine, works fine, just looks a little small. 8E12T6 1963 64 Cruiser pwb |
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