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1968 Spare Tire Rim Size Same?

 
Old 05-06-2019, 12:15 PM
  #21  
carriljc
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So? Did the cars with 255/60-15s spares fit in the tub?

I have 235/60-15s in the front & 255/60-15s in the rear. I'm about to get new rear tires and I was considering going to 235s all the way around and a new spare.

I have 8" rims BTW.

I guess if I get energetic I could go out there and experiment

Last edited by carriljc; 05-06-2019 at 12:16 PM.
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Old 05-06-2019, 01:14 PM
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Originally Posted by carriljc View Post
So? Did the cars with 255/60-15s spares fit in the tub?

I have 235/60-15s in the front & 255/60-15s in the rear. I'm about to get new rear tires and I was considering going to 235s all the way around and a new spare.

I have 8" rims BTW.

I guess if I get energetic I could go out there and experiment
I had gone with a 235/60-15 the first time to use as a spare tire to match my front. It did not close. That is why I tried the 205s and that is what worked.
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Old 05-06-2019, 01:38 PM
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Unfortunately the 255's (245 also) won't fit the tub/carrier....It will go in, but you can't close the tub and it will basically drag on the ground!

The instructions in the 82 CE basically say...Chuck it in the cargo area! (the nasty flat TIRE!) The CE has the 255/60/15's as standard.

I found the 205/75/15 is a good spare for that size tire.

Unkahal
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Old 05-10-2019, 10:01 PM
  #24  
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Anybody know what size spare tire came on the 82?
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Old 05-13-2019, 10:57 AM
  #25  
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185/80/R15 polyglas full sized 'spare'.
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Old 05-13-2019, 01:11 PM
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The real question is whether or not the tires on your car will fit in the spare tire tub or not.
What will you do with the tire that went flat if it won't fit in the tub?
Leave it on the side of the road?
I don't think you could get it behind the seats unless you removed one or both seats.
I can see why many members are using the tub to carry a repair kit and a small compressor, or they just call AAA.
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Old 05-13-2019, 02:01 PM
  #27  
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Default Use a luggage rack?

Originally Posted by OldCarBum View Post
The real question is whether or not the tires on your car will fit in the spare tire tub or not.
What will you do with the tire that went flat if it won't fit in the tub?
Leave it on the side of the road?
I don't think you could get it behind the seats unless you removed one or both seats.
I can see why many members are using the tub to carry a repair kit and a small compressor, or they just call AAA.
Yep....don't think the wife will hold the tire for me. This might be a good reason to put that chrome luggage rack on I have been thinking about. I can also use it for the car run chairs and a small easy-up.

Redvette2



Example only...not my car.
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Old 05-13-2019, 02:55 PM
  #28  
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That does look nice.
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Old 05-13-2019, 03:00 PM
  #29  
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All good and well until you're standing out in the desert when it's 120 in the shade..... and you're in the direct sunlight with a rupture or blowout!
I have a convertible and carry a large plastic bag, so i could always carry the broken spare home somehow on the rear deck..... I might just go 235s all the way around since that's what I have on the front already.

Originally Posted by OldCarBum View Post
The real question is whether or not the tires on your car will fit in the spare tire tub or not.
What will you do with the tire that went flat if it won't fit in the tub?
Leave it on the side of the road?
I don't think you could get it behind the seats unless you removed one or both seats.
I can see why many members are using the tub to carry a repair kit and a small compressor, or they just call AAA.

Last edited by carriljc; 05-30-2019 at 11:12 AM.
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Old 05-29-2019, 09:02 PM
  #30  
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Getting ready to install my replacement spare tire carrier (that I bought 30+ years ago from the local chevy dealer that no longer exisits) so I decided to check and see if the 255/60-15 will fit.

Hmmm... fit's really quite easily.

To use it would require adjusting the length of the forward carrier bolts, but the circumference of the tray is more than adequate. Now I have to decide whether to get 235s (and match all around) or get another set of 255 rears? hmmmm.. Decisions, decisions...




Last edited by carriljc; 05-29-2019 at 09:04 PM.
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Old 05-29-2019, 09:43 PM
  #31  
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Ok, so it fits into the tub, but can you now mount the tub back under the car?
I believe this is where many are having issues.
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Old 05-29-2019, 10:43 PM
  #32  
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I will give it a try... hopefully tomorrow. I've got to get under there and replace that dang tub with the new one anyway. I'll even try doing the adjustment. You'da thunk somebody has already gone through this, eh?
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Old 05-30-2019, 06:50 AM
  #33  
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My 69 has a 255x15 in the spare tub mounted on the stock 69 15x8 wheel. T
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Old 05-30-2019, 11:10 AM
  #34  
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Thanks terrys6t8roadster
That's good to know. I was going to go experiment.
And since you are capable that means I don't have to go experiment.

Many thanks for the info.

Last edited by carriljc; 05-30-2019 at 11:33 AM.
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Old 05-30-2019, 11:41 AM
  #35  
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I'm thinking I'll get this size as a SPARE also. Should match the 235/60R15s as far as height, and it should fit in the tire carrier with the 7" rim that my spare is on.

Originally Posted by gunrunr View Post
Well I put a 205/70R15 in the spare tire carrier and it closed nicely. With that headache down, its off to the next one.

Last edited by carriljc; 05-30-2019 at 11:41 AM.
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Old 05-30-2019, 11:44 AM
  #36  
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Originally Posted by oldcarbum View Post
ok, so it fits into the tub, but can you now mount the tub back under the car?
I believe this is where many are having issues.

the 'issue' is not the diameter, but bolting the carrier under the car...255mm is too tall..will either not bolt up or hang down severely.

unkahal.
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Old 06-01-2019, 12:41 PM
  #37  
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Ok, I picked up some 235/60R15s for the rear yesterday. So my four tires on the car will be 235s on 8"rims (what it came with). I removed my spare (big monster I bought ages ago) and bought a 205/70R15 and that is on a 7" rim (I really didn't know that till a couple of days ago...never had to use it in 34.5 years ).

I will be cleaning and painting today and I will see if I can adjust it some to hold the 235s. If not, then it will surely hold the 205/70R15 since the tire it replaced a bit bigger.

I used the website below to guesstimate the diameter of a spare tire to be approximate to the 235s (well, that and unrunr comments in this thread). Sure seems pretty close now that I have them in hand.

https://tiresize.com/comparison/


Originally Posted by L-46man View Post
the 'issue' is not the diameter, but bolting the carrier under the car...255mm is too tall..will either not bolt up or hang down severely.

unkahal.

Last edited by carriljc; 06-10-2019 at 11:26 PM.
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Old 06-01-2019, 06:24 PM
  #38  
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Looks like my PO painted the brackets and the tub. Bracket is a steel brown/gray color and the tub is black. Tub is fiberglass as I can see the glass hairs showing thru the black paint. Does not look too bad on a red car.

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Old 06-01-2019, 09:17 PM
  #39  
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Worked on my tub replacement today. My tub was in worse shape than I thought..... Per the part number on the sticker, it looks like the guy at the chevy dealer sold me an 82 Tub 30+ years ago! (I gots not recourse!!

Looks like it will fit just fine. I cleaned it and clear coated it today. I can always paint it later if need be. I stripped and primered the support bracket .... I had to tweak it to form fit the tub but it was relatively easy. I also cleaned and primered the frame where the forward tub bolts bolt on. Also sprayed some of that Eastwood Inner Frame paint(green)r since I was under there.....I had some leftover from doing the inside of the frame rails between the wheelwells.
If I'm feeling energetic then I'll the paint the support bracket and car frame... and bolt the tub & bracket it together tomorrow. I will probably fabricate a TOP COVER since nobody reproduces it and I can't imagine a used one being in any shape. Here 2 views at the new vs old tub:


Last edited by carriljc; 06-01-2019 at 10:56 PM.
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Old 06-02-2019, 12:28 AM
  #40  
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I think he did you a favor....looks bigger than the stock tub I have. I think the C3 tires got bigger as the years went on.

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