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Discussion Starter #1
Hi all knowing and great GTO restorers/owners,

I have a 69 GTO which I purchased with 245x60x15 tires and 15 inch wheels with a JW code (originally from a Firebird I believe). My research has led me to a crossroads. I'm trying to put it back to original stock condition from the factory so I found out these tires and wheels are wrong (I also have a front tire rub when turning). So now it looks like eventually I'll be changing tires and wheels. My original build sheet and invoice show G78x14 wheels and WW fiberglass tires.

I've read in the GTO restoration guide that my car would have come with 14x6 wheels (G78x14) with a JA code (disc brakes) or JC code (drum brakes). My car has factory power brakes so the code would be JA.

My questions are, what should I expect to pay for the proper wheels in the proper condition which in my case requires them to be pretty nice. Also are there any caveats I need to look for when shopping for them and what is an except able replacement tire for the WW fiberglass tires?

Thanks in advance to all for your help, Dan
 

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67 Basket Case Restorer
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Finding the correct wheels in very good condition will be plenty spendy. I would venture to guess in the $100 each range or more. The important part is that they are still round and don't wobble. Buying used wheels long distance and therefore, sight unseen, is risky. You may want to look at restorable wheels and have them restored too.

Coker has replacement fiberglass tires but if you've never driven a car with belted tires, be in for a shock. They handle like sheet compared to radials. They do have look-a-like radials too which are better but they are all expensive.

The reason you have a front rub now is the 245 is too wide on the front. 235 is about the limit and I like 215x65 for a front tire. It brings the tread width down to around 6-6.5 inches and the 65 series sidewall gets the height back up some to look right. In your case, you will be looking for a 70 series. I think 205 or the 215 is the equivalent of the G78.
 

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Discussion Starter #3
Finding the correct wheels in very good condition will be plenty spendy. I would venture to guess in the $100 each range or more. The important part is that they are still round and don't wobble. Buying used wheels long distance and therefore, sight unseen, is risky. You may want to look at restorable wheels and have them restored too.

Coker has replacement fiberglass tires but if you've never driven a car with belted tires, be in for a shock. They handle like sheet compared to radials. They do have look-a-like radials too which are better but they are all expensive.

The reason you have a front rub now is the 245 is too wide on the front. 235 is about the limit and I like 215x65 for a front tire. It brings the tread width down to around 6-6.5 inches and the 65 series sidewall gets the height back up some to look right. In your case, you will be looking for a 70 series. I think 205 or the 215 is the equivalent of the G78.
Thanks for the reply! I've been watching your projects posts, you are way worse than I am with too many projects. :)

I found a matched set of (3) near perfect 14 inch wheels with JA code so clear you can see without squinting for $45 each!!!! If I wanted the lighter gray color they would already be done color wise so I'll just need to repaint them. Best of all they are located 20 mms from the house! This guy has 10 66/67 GTOs in varying stages of restore, 4 of them rare convertibles!!! I guess he has more wheels that he needs - he has part all over the place!!!!

My spare is 225 x 70 x 14 and looks about right next to the car. 245 is definitely too big... While I look for a forth wheel I'll investigate the tire situation - when I get my new wheels and tires set up I'll have to sell the old ones. I'm hoping I don't have too much trouble selling them as a set (they are in very good condition). I have driven a belted tire before so I'll probably stick to radials.

Thanks again too many projects. I appreciate your reply! Dan
 

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I just bought a '67 and the guy I bought it from put some expensive radial red line tires on it. I actually want to switch to BF Goodrich Radial T/A's and plan to sell the red lines. I plan to work on it some this weekend, if you're interested I can let you know what size they are.
 

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Discussion Starter #5
Sending PM...
I just bought a '67 and the guy I bought it from put some expensive radial red line tires on it. I actually want to switch to BF Goodrich Radial T/A's and plan to sell the red lines. I plan to work on it some this weekend, if you're interested I can let you know what size they are.
 

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Ok, I found some OE 14" x 6" wheels for a great price - the guy didn't realize what he had. When I picked them up he even told me "I should be charging more for these but I'll honor the price I posted."

Three are in great shape with the JA code (for disc break cars), one is in ok shape with a JC code (for drum brake cars). I'll get all four blasted and paint them. I already have the stencil kit.

I'm looking to use the JC wheel (which will be in great shape when I'm done with it) as trade bate for another JA wheel in similar shape.

My question now is, do you guys have suggestions for tires - brand or model? I know the popular tire back then was Firehawk but they are not longer made. I plan to get radials in either 215/75 or 225/70 size.

I found this site, I have not verified what it says yet, showing a conversion for all the old referenced sizes.
 

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67 Basket Case Restorer
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Personally, I wouldn't do anything with the JC wheel. Once you spend the money to restore it, the new owner may need to strip it and start all over to get a paint match to his other wheels.
 

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Discussion Starter #8
Personally, I wouldn't do anything with the JC wheel. Once you spend the money to restore it, the new owner may need to strip it and start all over to get a paint match to his other wheels.
True but if I can't find a JA wheel in the meantime I'll have to wait to change my tires. They could have it blasted again if they want to change colors... and it won't cost much. A local shop will blast mine for $12 each... paint will be same cost for 3 or 4 wheels, five with the spare. Speaking of which I could use the JC as a spare and find another JA... hmmm
 

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True but if I can't find a JA wheel in the meantime I'll have to wait to change my tires. They could have it blasted again if they want to change colors... and it won't cost much. A local shop will blast mine for $12 each... paint will be same cost for 3 or 4 wheels, five with the spare. Speaking of which I could use the JC as a spare and find another JA... hmmm
Now you're thinking...no wasted money...:thumbsup:
 

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Discussion Starter #10
Yes indeed! I guess a blind nut does find a squirrel once in a while. :)

(yes I know that's backassward) :)
 

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Yes indeed! I guess a blind nut does find a squirrel once in a while. :)

(yes I know that's backassward) :)
Huh ??? what you talkin' bout ?? My dyslexia read that just fine until you pointed it out. NOW I'm confused....:willy:
 

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Now you're thinking...no wasted money...:thumbsup:
Well not so fast... I haven't tried yet but I think the JC wheels won't work on the front of my disc brake car... the interior dimensions between the two coded wheels is very different, I'll try it on the front of my car and post some pictures later. Dan
 

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I got around to posting my tires and wheels for sale on CL and they were sold in less than an hour!!!! Now I need to get my wheels cleaned and prepared for new shoes!!! That was way faster than I ever imagined!
 

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Well not so fast... I haven't tried yet but I think the JC wheels won't work on the front of my disc brake car... the interior dimensions between the two coded wheels is very different, I'll try it on the front of my car and post some pictures later. Dan
Use the JC wheel as the spare. if you have a flat on the front, move a rear forward and put the spare on the rear.

Or just call a roll-off and have it hauled home...:lol:

I got around to posting my tires and wheels for sale on CL and they were sold in less than an hour!!!! Now I need to get my wheels cleaned and prepared for new shoes!!! That was way faster than I ever imagined!
I hate it when that happens. I always feel I sold them too cheap then...:cryin:
 

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Discussion Starter #16
Good point... thx.

Use the JC wheel as the spare. if you have a flat on the front, move a rear forward and put the spare on the rear.

Or just call a roll-off and have it hauled home...:lol:



I hate it when that happens. I always feel I sold them too cheap then...:cryin:
Yea, I thought the same thing but I will end up with new tires, wheels blasted and painted, new interior detail parts, and a rebuilt rear end for the money I got for them... add in the "new to me" wheels and I'm not out of pocket much at all :bannana:(I'll sell a few old truck parts and make that up too :) ).
 

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I'm in the same situation you're in. Found a set of two JT (1970 disc brake) and three JC wheels. From what I've read, the JT is identical to the JA other than the date. If that's not correct I'd be interested in knowing. Planning to buy the BFG Silvertown Coker redlines, but hung up between the 225/70-14 or the 215/70-14. Have a set of Michelin 225/55/17's on the car now and the fronts rub when I turn. I went and had my five wheels sand blasted and powder coated silver. Have the paint to do the faces the correct colors. Would be curious to know what others have on their '68's.
 

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67 Basket Case Restorer
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I'm in the same situation you're in. Found a set of two JT (1970 disc brake) and three JC wheels. From what I've read, the JT is identical to the JA other than the date. If that's not correct I'd be interested in knowing. Planning to buy the BFG Silvertown Coker redlines, but hung up between the 225/70-14 or the 215/70-14. Have a set of Michelin 225/55/17's on the car now and the fronts rub when I turn. I went and had my five wheels sand blasted and powder coated silver. Have the paint to do the faces the correct colors. Would be curious to know what others have on their '68's.
The 225 will look better and fit just fine with the factory wheel. The reason the 17's rub is that the wheels are too wide for the front....usually around 9" wide. With ~4.5" of back space, there just isn't room for a wheel that wide in there. I have 225/70 tires on 15x7 rally II's on my '67 and they have plenty of clearance.
 

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That's what I was hoping to hear. I much prefer to put a 225 on there than a 215. Thanks.
 

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Discussion Starter #20
I'm in the same situation you're in. Found a set of two JT (1970 disc brake) and three JC wheels. From what I've read, the JT is identical to the JA other than the date. If that's not correct I'd be interested in knowing. Planning to buy the BFG Silvertown Coker redlines, but hung up between the 225/70-14 or the 215/70-14. Have a set of Michelin 225/55/17's on the car now and the fronts rub when I turn. I went and had my five wheels sand blasted and powder coated silver. Have the paint to do the faces the correct colors. Would be curious to know what others have on their '68's.
I went with 225/70 14... I think the other OEM size is 215x75 14 which corresponds to about the same tire height. I wanted to go with the G7814 referenced on my build sheet.

I used this site to help.

Vintage Tire Size Conversion Chart - Vintage Car Connection - Old tire sizes

As Too Many Projects said, you should be good with what you are looking to get.

Dan
 
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