Fuch-ing confused

[58A - 71E]

All,
done a few searches on here but still not sure I've found the info I'm after -
does anyone know the sizes and years that fuchs were offered on 911s?
I believe the 4.5J were first? years?
what about the 5.5J, deep 6 flat 6 etc etc

TIA

[Nick Moss]

1967S: 4.5"
1968S: 5.5"
1969 - March 1971: Deep 6"
March 1971 on: Flat 6"

[mycar]

1967S: 4.5"
1968S: 5.5"
1969 - March 1971: Deep 6"
March 1971 on: Flat 6"

Yes James, so just leave my wheels where they are, they`re not right for your car.

Mike.

[58A - 71E]

1967S: 4.5"
1968S: 5.5"
1969 - March 1971: Deep 6"
March 1971 on: Flat 6"

Thanks Nick, so it was only the S models in 67 and 68 then that came with Fuchs? Were the standard models on steels?

Anyone know about bigger sizes? RS etc

[Timo]

RS were 7R if I'm correct

[hot66]

RS were 7R if I'm correct

nope ... 7R rims are different. 7R has a greater offset so they can fit within a narrow body ... very cool rims

RS came with 6 & 7's to start with & could be specced from early '73 with 7 & 8's

[Alan @ CanfordClassics]

Hi,

Even in 67 you could order any 911 or 912 with fuchs. I once had a 67 912 that had original 4.5 fuchs on it. I have had R rims with dates stamps from 1967-70 thus being used on the R and the ST.

HTH

Alan

[Bertroex]

I'm just blatantly copying Peter Morgan's " Original Porsche 911"

2 litre models:

There were quite a few complaints about the skinny 165HR tyres fitted to the 4.5jx15 steel wheels of the original 911. And for 1967, the new S ismayed Car and Driver by still using 4.5 inch rims for its "flashy new wheels"., and the magazine was none too complimetary about the dunlop SP tyres either. These new wheels, manufactured by the Fuchs Company, were the first of the classic five-spoke forged allys wheels that would become a porsche trademark in later years. In 4.5 in width, the alloys were 2.3kg (5.lb) lighter then their steel equivalents, and roundness was easier to contral than wit a stamped wheel. Clearly, the weight advantage of alloys was to increase as wheel rim width grew. So strong was the obsession to reduce unsprung weight that even the wheel nuts were light alloy, and still are today.

It was not until august 1967 that 5.5 in rims became available for the S, and the size grew again to 6in for the E and the S with the following year's B programme.
Where hydro-pneumatic suspension was fitted, ride was further improved by 5 and1/2 x 14 fuchs wheels, the 1 inch reduction in wheel diameter giving a deeper and more flexible tyre wall.

Dunlop tyres were still the preferred fit for the T and E with the new 185/70VR size. The S went one better and was offered with new Michelin XVR's, tyres that significantly improved the cornering ability of the firmly -sprung car.


2.2 series

Again Morgan:
The 6j x 15 fuchs wheel became the usual fit across the range of models, not only because these wheels had become synonymous with Porsche and its success, but also because the other size that was available as an option - a 14 inch rim- was generally unpopular.

The smaller wheel was produced to allow fitment of 85-series tyres, which had more flexible side walls than the 70-series tyres. The 14 inch rim was fitted to sportomatics to start with, but many customers wanted to stay with the 15 inch wheels-and the firmer ride that went with them. The 14 inch wheels were options on the T through 1970 and 1971, and were then deleted.

On the T in many markets, the 5.5J x 15 steels wheels was still the standard offering, but few customers (except notably abzadams) wanted these old-fashioned wheels. The standard tyre for the T was the 165HR 15, but the 185/70 VR15 option was much more popular. The 185HR 14 was also available.

For the 2.4 litre models:

The standard factory fitting on the T for the 1972 and 1973 model years was the 5.5Jx15 non-chromed steel wheel with Dunlop CB57 165/70VR tyres. The E used 6jx 15 steel wheels in some markets with Dunlop CB57 185/70VR tyres, while the S continued to use the (five times) more expensive 6jx15 fuchs forged alloy wheels (an option for the other models) with michelin XVR 185/70VR tyres. In several markets, the forged alloy wheels were fitted to the T and E as standard.

Earlier experiments with the Stuttgart-based Mahle ocmpany into magnesium casting had led directly to the development of a cast aluminium alloy wheel. It was cheaper to make than the forged alloy wheel, although it was not as strong. This new 6j x 15 wheel, made by the german company ATS and known as the 'cookie-cutter' because of its appearance, was standard on 1973 Model year E, and would remain in use until 1983.



HTH,



Bert

[58A - 71E]

Thanks Bert,

Argh, just noticed you have a 2.4E, so here we go:

mine is a '71 2.2

but I've acquired an unloved '68S and was wondering what they both should have

[Bertroex]

Sorry James, I edited my post as I saw your post, have copied the 2 litre section for you.

68S? Tell us more more more!!!!!

Bert

[Alan @ CanfordClassics]

Hi James,

A 68 should have 5.5 inch wide fuchs and a 71, well that depends on when it was made during the production year and also when Porsche run out of old stock and used new. It has been stated the official date of change from "deep 6" to "flat 6" (please see attached pic for some differences) is March 71 but I don't think is that exact.

HTH



Alan

[210bhp]

but I've acquired an unloved '68S

The red one on ebay recently?

Regards
Mike

[Timo]

nope ... 7R rims are different. 7R has a greater offset so they can fit within a narrow body ... very cool rims

RS came with 6 & 7's to start with & could be specced from early '73 with 7 & 8's

Oops, ah well still learning

[58A - 71E]

Thanks for all the info guys and great photos from Alan as usual - hopefully should be a good resource for other people in the future too.

As for the '68S, its also Albert blue like mine, but I cannot tell a lie, as much as its a burden to its owner I'm only babysitting it for a week

One day, one day...

[Bertroex]

Aaaaaaaaahhhhhhh, that one. I'd love a 68 but I love even more a good 67

Nice avatar!


Bert