1967 Giulia Super: Best Options for Wheels/Tires Approximating Original Tire Size? - Page 3 - Alfa Romeo Bulletin Board & Forums
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post #31 of 84 (permalink) Old 04-01-2018, 11:30 AM
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Originally Posted by berardo View Post
With regard to the earlier mentioned Turbinas, is there a preferred offset or do they all fit?
Well, I hate to pose as an expert but my understanding is that the Turbina wheel came out on the Alfa Montreal first and that those wheels are a different size and much rarer than the Turbinas that came on later GTVs and Spiders. Those are the ones you'll find regularly and it is my understanding that they are all 14" by 5-1/2" rims with a 38mm offset. I think the first ones were made by Campognolo and are lightest of the bunch with a higher magnesium content. I think Cromodora made them for Alfa as well. Magnesium content has its good and bad qualities; lightness vs. degradation over time.
I welcome anyone's corrections to the above.

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post #32 of 84 (permalink) Old 04-01-2018, 12:45 PM
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Red face These...

These are now on my '68 Super. 14x5 1/2 made by cromodora. Great look and they are factory option wheels from 1968, 10548 part numbers cast into the back.
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post #33 of 84 (permalink) Old 04-01-2018, 12:49 PM
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The tires are Yokohama S Drives 185/55/14 , the off set of the rim pushes it right to the limit, as you can see in the picture, I had to roll the inside of the fender well, and compensate the springs to make them fit, all worth it!
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post #34 of 84 (permalink) Old 04-01-2018, 01:47 PM
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I have GTA repros that are 15x7 with 185x65x15 Sumitomo tires. It's a tight squeeze and I had to raise the rear end by replacing the Alfaholics suspension with something closer to stock.
I will need tires soon, and would like to change the wheels before then. While my first choice was to go stock 15" steel, I'm considering all options.
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post #35 of 84 (permalink) Old 04-02-2018, 04:03 PM
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I warned the PO that the 7" wheels would not work especially with the lowered package. Ironically it was delivered to him with Turbinas and 185's. But some noobs always think "more is better". Guys here are even having trouble rubbing on 185's with the narrower AH GTA-R wheels due to the offset. The spider and GT wheel arches are very generous, not so on the rear of a Giulia sedan. On a sedan, offset is everything. I have some lovely Campy Americas but I'd have to shave the hub and wheel 5 mm each or go with 165's (maybe 175's).

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post #36 of 84 (permalink) Old 04-02-2018, 04:19 PM
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I wish he left the Turbinas in the trunk.
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post #37 of 84 (permalink) Old 04-02-2018, 04:23 PM
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I love the America's! Thats what I wanted on my Super, I'd go with 175's, I couldn't find the rims at the time, are they4x108 bolt pattern though? I've seen 4x98 too....
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post #38 of 84 (permalink) Old 04-02-2018, 04:31 PM
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The alloy TZ or Ti Super wheels look period. Period!

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post #39 of 84 (permalink) Old 04-02-2018, 04:37 PM
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Quote:
Originally Posted by AlfaEvan View Post
I love the America's! Thats what I wanted on my Super, I'd go with 175's, I couldn't find the rims at the time, are they4x108 bolt pattern though? I've seen 4x98 too....
Yes, earlier they were made as a factory alternative in 4x108. Later they put them on Alfettas but in 4x98. I already have early 12# CD-35's on my 69 Spider and nice Heinbrand TZ-R wheels on my 72 Super. I need a GT now for those wheels. Insane eh? B

PS: those Ronals's you show above are very similar to the Campy America. A friend put them on a Giulia and had to shave the hubs and wheels 5 mm each to accommodate 185's, a trackday car so he wanted wider tires.
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Last edited by Anfanuts; 04-02-2018 at 04:48 PM. Reason: add ps
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post #40 of 84 (permalink) Old 04-02-2018, 04:41 PM
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Quote:
Originally Posted by Subtle View Post
The alloy TZ or Ti Super wheels look period. Period!
Indeed. And they have a generous offset, HB at 38mm. Jim now regrets the AH GTA-R wheels as they rub, even the thinner owes with 185's.
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Last edited by Anfanuts; 04-02-2018 at 04:56 PM.
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post #41 of 84 (permalink) Old 04-02-2018, 08:16 PM
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Indeed. And they have a generous offset, HB at 38mm. Jim now regrets the AH GTA-R wheels as they rub, even the thinner owes with 185's.

Actually, mine are the 6x15x28.5mm GTA style wheels w/ 185x65x15 tires supplied by Classic Alfa. They fit just fine when my Super had it's "granny" overload spring, but rub the rear fender lip with stock springs and stock ride height. The problem "may" be caused by worn rear-axle bushings, although everything feels tight back there. I am, of course, thinking of machining the rear hub, rolling the fender lip, or, perhaps even better, simply fitting 175x70x15 tires. Supers are finicky about whee/tire combinations.

Jim . . . '72 Super 1300, '70, 1750GTV, 2nd series,
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post #42 of 84 (permalink) Old 04-03-2018, 05:56 AM
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there is very little lip, in fact, the sheet metal just flares out over the wheel with a very short return. pretty flat under there, not much to fold really.
as mentioned, the rear wheel arches are N-A-R-R-O-W!!! the fact that the limit strap mount is in there too makes a bad situation worse. much worse. overall width is a concern but offset may be more of one.
my car is lowered w a ward and dean street spring package. for general street use, running stock rims on mine w 165, tall (can't remember the sidewall height number). they clear everything by a mile, give a surprising amount of grip, a lower final drive for easier cruising and raises the car up off the ground to alleviate road clearance issues. for fun stuff, have 15x7 wheels w 205/50/15 tires. its been so long that i can;t remember exactly but think the wheels have about a 27-28mm offset. tires clear (just) except under very hard cornering when the inner side of wheel itself rubs on limit strap mounts.. there is no room to finagle offset etc to get a little more clearance, so am taking those mounts off.
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post #43 of 84 (permalink) Old 04-03-2018, 09:01 AM
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Here's the pic from inside of rear wheel well. Area where tire usually touch inner fender is marked with red, I hope this helps to understand what there is inside and why rolling the fender lip doesn't actually help much.
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Giulia Super "Biscione" 28th February 1969
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post #44 of 84 (permalink) Old 04-03-2018, 09:08 AM
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Gasolina, yep, you're spot on, its not the fender but the inner liner, I rolled the inner liner back which helped a lot, I also notice... that there is about a 1/2 inch difference on the inner rear on the left and right side of the car... so Alfa wasn't very exact when building these things, you wouldn't notice it if you stuck to the original rim and tire size's, I asked others and they noticed the same too.
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post #45 of 84 (permalink) Old 04-03-2018, 12:13 PM
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Quote:
Originally Posted by AlfaEvan View Post
that there is about a 1/2 inch difference on the inner rear on the left and right side of the car... so Alfa wasn't very exact when building these things, you wouldn't notice it if you stuck to the original rim and tire size's, I asked others and they noticed the same too.
That's why it's important to use the factory shims to locate the T bar, and thus the axle in the correct position.

JC de Koeijer

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