Lug Nut Size

davidw99 · Posted: Wed Oct 17, 2012 4:59 am Post subject: Lug Nut Size

Dumb question but here it goes. I'm changing to disk brakes and putting studs on the disks so that I don't have to use the lug bolts any more. I don't like having to balance the wheel on one hand while trying to line up the lug bolt with the other. My question: the nuts I'm thinking of using come in 3/4" (19mm) and 13/16" (just under 21mm) for the wrench size. Other than that they are the same. Should I have any concern if I use the thinner 3/4" lug nuts? I know the 13/16" have a slightly thicker wall but does it realy make a difference in day-to-day use?

Thanks for your thoughts.
_________________
Dave

'73 Saturn Yellow Sports Bug that has undergone a full pan off restoration. "Herbert IV."

'67 Sedan. "Bellamy." Currently being "refreshed" and recently repainted.

runamoc · Posted: Wed Oct 17, 2012 6:42 am Post subject:

The wheel 'seats', acorn, are more important than the thickness of the 'sidewall' on the nut. Are the nuts you have in mind made for acorn wheel 'seats'?
_________________
Daily driver: '69 Baja owned 44 yrs - Plan B: '81 Rabbit Diesel LS Deluxe - Plan C: '72 Ghia
Yard Art: 2 Sandrails
Outback: '69 Ghia - '68,'69,'70,'72 Beetle - '84 Scirocco, GTI - Pair of '02 Golfs-
VW Wiring = It's just wires

davidw99 · Posted: Wed Oct 17, 2012 6:49 am Post subject:

Yes.
_________________
Dave

'73 Saturn Yellow Sports Bug that has undergone a full pan off restoration. "Herbert IV."

'67 Sedan. "Bellamy." Currently being "refreshed" and recently repainted.

docdanracy · Posted: Wed Oct 17, 2012 6:53 am Post subject:

depending on the size of the studs ( stock is 14mmx1.5mm) then the 19mm nuts should be fine....
19mm is the size used on Porsches for years, with the same 14x1.5 stud size.
_________________
Doc
1970 Sunroof Bug Yukon Yellow (L19K)
Custom 6.5x15” 914 Sport Wheels wrapped in 185x65x15 Contis
Empi shifter, full compliment of gauges, 1679 with mild cam, stock induction

SOLD: 1974 Marina Blue Standard Beetle undergoing restoration/preservation
1679 with Kadrons and header/QP
914 sport wheels 5.5" ET40 wrapped in 195x65x15 Kumhos

davidw99 · Posted: Wed Oct 17, 2012 7:30 am Post subject:

The studs are 14mm x 1.5mm for the portion that goes into the disk and 1/2-20 for the part the nut goes on to.
_________________
Dave

'73 Saturn Yellow Sports Bug that has undergone a full pan off restoration. "Herbert IV."

'67 Sedan. "Bellamy." Currently being "refreshed" and recently repainted.

docdanracy · Posted: Wed Oct 17, 2012 7:39 am Post subject:

the 13/16s is a pretty common size for the aftermarket lug nuts...
I personally would prefer the 19mm since you can continue to use your tool kit's 19mm lug wrench for emergencies on the road. Otherwise you are carrying an extra lug wrench.
_________________
Doc
1970 Sunroof Bug Yukon Yellow (L19K)
Custom 6.5x15” 914 Sport Wheels wrapped in 185x65x15 Contis
Empi shifter, full compliment of gauges, 1679 with mild cam, stock induction

SOLD: 1974 Marina Blue Standard Beetle undergoing restoration/preservation
1679 with Kadrons and header/QP
914 sport wheels 5.5" ET40 wrapped in 195x65x15 Kumhos

Chris Vellat · Posted: Wed Oct 17, 2012 9:29 am Post subject:

I've got conversion studs and 13/16's nuts on the back of my Baja and BayWindow Bus studs pressed-into `66/`67 Bug drums up front - and use Porsche alloy 19mm lugs. 19mm is essentially 3/4" - I've got an American star-bar that works perfectly for both patterns - shouldn't be too hard to find if you go that route.

I've never seen an acorn seat wheel for a VW, only ball-seat...something aftermarket?
_________________
(3) '69's
'67 Baja
'74 Super
'73 Bay
(2) '77's

davidw99 · Posted: Wed Oct 17, 2012 9:43 am Post subject:

I'm going to be using these with stock wheels. Are lug nuts with acorn seats the wrong kind?
_________________
Dave

'73 Saturn Yellow Sports Bug that has undergone a full pan off restoration. "Herbert IV."

'67 Sedan. "Bellamy." Currently being "refreshed" and recently repainted.

docdanracy · Posted: Wed Oct 17, 2012 9:46 am Post subject:

yes, you need ball seat for Factory VW/Porsche wheels.
Aftermarket wheels are mostly acorn or 60* seats.
Get some 14x1.5 studs and use Porsche/VW correct ball seat lug nuts.
_________________
Doc
1970 Sunroof Bug Yukon Yellow (L19K)
Custom 6.5x15” 914 Sport Wheels wrapped in 185x65x15 Contis
Empi shifter, full compliment of gauges, 1679 with mild cam, stock induction

SOLD: 1974 Marina Blue Standard Beetle undergoing restoration/preservation
1679 with Kadrons and header/QP
914 sport wheels 5.5" ET40 wrapped in 195x65x15 Kumhos

davidw99 · Posted: Wed Oct 17, 2012 10:07 am Post subject:

Does anyone here have experience with acorn to ball seat adaptor washers?
_________________
Dave

'73 Saturn Yellow Sports Bug that has undergone a full pan off restoration. "Herbert IV."

'67 Sedan. "Bellamy." Currently being "refreshed" and recently repainted.

runamoc · Posted: Wed Oct 17, 2012 10:52 am Post subject:

davidw99, I was confused on the what I was thinking an acorn seat is. It IS a ball seat that you need for stock wheels. Embarassed

_________________
Daily driver: '69 Baja owned 44 yrs - Plan B: '81 Rabbit Diesel LS Deluxe - Plan C: '72 Ghia
Yard Art: 2 Sandrails
Outback: '69 Ghia - '68,'69,'70,'72 Beetle - '84 Scirocco, GTI - Pair of '02 Golfs-
VW Wiring = It's just wires

davidw99 · Posted: Wed Oct 17, 2012 10:58 am Post subject:

Thanks. I didn't know that there was a difference. Ask one question and learn something else! I might have figured it out but might not have also.
_________________
Dave

'73 Saturn Yellow Sports Bug that has undergone a full pan off restoration. "Herbert IV."

'67 Sedan. "Bellamy." Currently being "refreshed" and recently repainted.


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