1967 Giulia Super: Best Options for Wheels/Tires Approximating Original Tire Size? - Alfa Romeo Bulletin Board & Forums
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post #1 of 84 (permalink) Old 07-24-2016, 10:20 PM Thread Starter
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1967 Giulia Super: Best Options for Wheels/Tires Approximating Original Tire Size?

I have a 1967 Giulia Super that a previous owner fitted with a 2.0 engine, Koni shocks F/R, and slightly lower (0.5-0.75") springs. I mostly drive it on weekends and in casual Northern California vintage rally events like the Snowball, Motherlode 400, Faultline 500, and California Melee. All of these events include at least a few miles of gravel roads and ground clearance can be a big deal.

Current wheels are (original Alfa) Cromodora's marked 6"J x 14" H2 offset 22 shod with Sumitomo HTR200 185/70R14 tires translating to a diameter of 24.2" and width of 7.3". These seem to fit okay and I only notice rubbing at the extents of steering travel. Based on the offset comments in this forum, I suspect the wheels were machined to increase the offset to greater than 22mm.

I would like to install new wheels and tires that most closely approximate the original "skinny" tires used on the Giulia Super. Partly because I don't like the aesthetics of the Cromodora wheels, and partly because I don't drive the car particularly hard and I expect stock tire sizes will make for more pleasant handling characteristics.

There are a *lot* of posts about wheel and tire sizes on these forums, but it seems like most folks are focused on fitting fatter tires whereas I'm going the opposite direction.

Any recommendations for sizes and sources for wheels and tires that most closely approximate original sizes and aesthetics? I'm in the U.S. where wheel and tire selection might be dissimilar to Europe, the UK, and other parts of the world. And as above, I don't drive this car particularly hard, so I'm not intent on obtaining super sticky rubber.

In addition to the wheel/tire change, I will be investigating restoring the car to its original ride height via stock spring lengths or spacers.

Last edited by ducsingle; 07-24-2016 at 10:24 PM. Reason: typo
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post #2 of 84 (permalink) Old 07-24-2016, 11:17 PM
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Alloy replicas of the TZ/TiSuper wheels are good. 15X5.

Got them with Vred Classic Sprints 175X70.

Look good, lots of traction in wet or dry, with no rubbing --even on serious humpy-bumpies.

Bob,
Avatar is the 68 Super, bought new.
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post #3 of 84 (permalink) Old 07-24-2016, 11:27 PM Thread Starter
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Alloy replicas of the TZ/TiSuper wheels are good. 15X5.
Thanks. What offset? And any recommendations as to a source for alloy replicas?

Quote:
Got them with Vred Classic Sprints 175X70.
A 175/70R15 translates to a diameter of 24.6" and a width of 6.9". The diameter seems close to the stock 155/80R15 (24.8") but the width is significantly greater than stock (6.1"). Per my original post, the goal is to install readily available tires that most closely resemble the stock size. Did you go with the 175/70R15 tires to obtain wider rubber, or was that the closest you could get to the stock size?

Last edited by ducsingle; 07-24-2016 at 11:39 PM.
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post #4 of 84 (permalink) Old 07-24-2016, 11:28 PM
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Cool

Congrats on the Giulia Super ! They really are great to drive !
Many here are into a more stock size tire and wheel combo. You should appreciate the nimble steering and great ride that Alfa built into the Giulia line.
I'm a big fan of the Vredestein line of tires for their good grip and nice manners on everyday roads. Very available in the US and at very reasonable prices !
Here are original size Vred. 165-14 on my 1970 1600S.
I also use their 155-15 on my '64 Spider.
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'64 Guilia Spider
'67 GTV
'68 Giulia Super

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post #5 of 84 (permalink) Old 07-25-2016, 12:24 AM Thread Starter
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Originally Posted by 101/105guy View Post
I'm a big fan of the Vredestein line of tires for their good grip and nice manners on everyday roads. Very available in the US and at very reasonable prices !
Here are original size Vred. 165-14 on my 1970 1600S.
Thanks! The house in the background looks like an Eichler.

I get the following specs on the 165 - 14 Vredestein Sprint Classic:

Type: RADIAL
Diameter: 625 mm = 24.6"
Section Width: 163 mm = 6.4"
Max Speed: 130 mph
Max Load: 500 kg
Weight: 8.5 kg
Now I just need to figure out which wheels to buy and where. . . .
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post #6 of 84 (permalink) Old 07-25-2016, 03:21 AM
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101/105:
Your cars look fabulous!
I also like classic sprint as I like the feel of skinny tires

But the OP has a ´67 car.
My ´67 junior has 15" wheels with 155R15, didn´t the Giulia have those also?
/J

1967 GT 1300 Junior
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post #7 of 84 (permalink) Old 07-25-2016, 06:32 AM
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Bought my second Super in 2013.

Came with the old 15-inch steel wheels with 165 X 80.

That with a 4.10 LSD made for a too-tall ratio.

Bob,
Avatar is the 68 Super, bought new.
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post #8 of 84 (permalink) Old 07-25-2016, 06:36 AM
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67 supers came w 15" wheels 4.5" wide. 155x15 tires. there were options for 5", 5.5", 6" but i have no idea what the offsets were. have you tried APE for steel wheels as original? have vredestein S80 sprint+; 165 R 15. fit great even on my lowered car. great over the road. ton of stick.
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post #9 of 84 (permalink) Old 07-25-2016, 06:37 AM
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Yes, that is my Eichler in Orange, Ca !
4 1/2-15" would be stock on the '67. In '68, Alfa offered the 14" wheel on all of their cars.
Stock steel wheels and hubcaps in 15" look good and work great. The TI Super replica wheels are a great choice and are available from some of our euro vendors at a fairly steep price.
The blue GTV needs new tires and I am considering going back to 15" or stay with 165-14 Vreds.

'64 Guilia Spider
'67 GTV
'68 Giulia Super

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post #10 of 84 (permalink) Old 07-25-2016, 01:39 PM Thread Starter
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4 1/2-15" would be stock on the '67.
I should have clarified that I'm not so concerned about 14" vs. 15" wheels so much as obtaining stock sized tires and offset.

Extrapolating from the wheel-size.com web-site (can't post a link due to my newness) a 4.5 - 15" wheel would require an ET44 offset (5.5 is ET38 and ET seems to increase by 3 for every 0.5" reduction in rim width). However, I'm guessing 5 - 15" wheels might be the narrowest I'll find with stock appearance and close to correct offset (ET38 - ET41).

I might go with a 15" wheel so as to provide clearance for more modern brake calipers (e.g., Wilwood) in the future.
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post #11 of 84 (permalink) Old 07-25-2016, 01:49 PM
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Quote:
Originally Posted by ducsingle View Post
Now I just need to figure out which wheels to buy and where. . . .
I'm not quite sure I understand the question here - you have a '67 Giulia Super, you want to return to the original 15" tire size - why wouldn't you simply buy a set of Giulia Super wheels? The Alfa factory did all the engineering on offset, tire diameter, drive ratio, fender clearance, etc. 50 years ago - why reinvent the wheel (quite literally)?

Given that you live in Northern California, just wander over to Tracy, visit Alfa Parts Exchange and pickup a set of 15" 105 wheels. These were supplied on 1600cc Sprints and Duettos, as well as Supers, so they are fairly available. Get some hubcaps while you're there. Mount a set of the Vreds that 101/105guy recommended and you'll be done.

Jay Mackro
San Juan Capistrano, CA

'63 Guilia spider
'65 Guilia Sprint GT
'67 Duetto
'91 164L

Last edited by Alfajay; 07-25-2016 at 01:53 PM.
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post #12 of 84 (permalink) Old 07-25-2016, 08:49 PM Thread Starter
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why wouldn't you simply buy a set of Giulia Super wheels? The Alfa factory did all the engineering on offset, tire diameter, drive ratio, fender clearance, etc. 50 years ago - why reinvent the wheel (quite literally)?
My understanding is that original wheels were not designed for tubeless tires whereas modern equivalents (which appear to be available in very close to original sizes) are.
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post #13 of 84 (permalink) Old 07-26-2016, 02:32 AM
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I use Vredestein Classic Sprint 155R15 on my original 15" rims. Even if one of the wheels doesn't hold the air as well as the others it isn't a big deal for me. You'll do fine
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post #14 of 84 (permalink) Old 07-26-2016, 05:54 AM
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these wheels work fine with tubeless tires.
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post #15 of 84 (permalink) Old 07-26-2016, 05:57 AM
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Yes, tires can hold air (or can not), but there is a risk that tire fall out of rim during ride. Tubeles need "J" profile rims. I know many people who run old Alfa wheels without tube, but there is a risk..

Giulia Super "Biscione" 28th February 1969

Last edited by Gasolina; 07-26-2016 at 06:03 AM.
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