Mercedes-Benz Forum banner

1 - 10 of 10 Posts

·
Registered
1988 560SL, 1969 280SL(113)
Joined
·
91 Posts
Discussion Starter #1
I have committed to the purchase of a set of four 15 x 7 wheels with ET of 23 having new Michelin 215/65-15 Defender rubber mounted. I am out of country until Thanksgiving so I haven’t actually laid hands on them yet. Mounting bolts not included.

I can mount these on my 113 with smaller boots but I prefer to mount them on my 107 (1988 560 SL). I think these will fit the 107 as is but I have seen comments about some wheels fouling the large front calipers of the 560SL. Is there a problem here? The tires themselves are larger than the original 107 tires but I think they are not large enough to cause a rub problem. Comments welcome.

These wheels will require lug bolts with the spherical profile under the head. Can anyone provide the proper bolt length, quality and a recommended source.

Thanks for your advice.
6557347E-6CBD-4D79-9BC4-F4651C0322C4.jpeg 60227A97-3E9C-46B8-A9D7-5BE54748F5A3.jpeg
 

Attachments

·
Registered
1986 560 SL
Joined
·
7,295 Posts
Unless someone with first-hand experience with these wheels on a 560 can advise you, I think you'll have to try them and see. You are committed anyhow. A least you have a fall-back plan with the 113.
 

·
Registered
1991 300SE W126, 1985 300SL R107, 1991 190E 2.3 (caretaker)
Joined
·
110 Posts
As I understand it they won't clear the larger callipers on post-85 cars, so you'd have to run larger spacers. It can be done though apparently - the SL shop in the UK runs them on a 300SL with spacers.
 

·
R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
Joined
·
31,708 Posts
They should use the same ball seat lug bolts as the '85 and earlier 107s with the light alloy wheels.
 

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500seAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
21,924 Posts
They should use the same ball seat lug bolts as the '85 and earlier 107s with the light alloy wheels.
Yes, all the ones I’ve owned have used the bundt 29-30mm shank ball seat 12x1.5 bolts.


Edit: and they will not fit on a stock 560sl.
 

·
Registered
1988 560SL, 1969 280SL(113)
Joined
·
91 Posts
Discussion Starter #7 (Edited)
Yes, all the ones I’ve owned have used the bundt 29-30mm shank ball seat 12x1.5 bolts.


Edit: and they will not fit on a stock 560sl.
Fonzi, is this a matter of a spacer to change the et or are they unworkable at any offset?
 

·
Registered
yet to be determined
Joined
·
205 Posts
typicaly speaking most cars with 15inch steel wheel will not fit a 15inch aluminum wheel due to the thickness of the material of the wheel, same can be said of a TON of cars thru the 70s-90s,as well as 16s, obviously there are exceptions out there, but the why it happens is almost never truely an offset issue but a wheel thickness issue as the "step" from the center out to the wheel is considerably thicker than its steel brothers, the depth of the step can sometimes be negated with a spacer
 

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500seAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
21,924 Posts
Fonzi, is this a matter of a spacer to change the et or are they unworkable at any offset?
If you already own both the wheels, and the 560sl, I suggest you take off one of your front wheels and try for yourself. It will be apparent.

Yes, you can add spacers to your front wheels (reducing the offset, but more importantly making room for the brake caliper), or change out the entire spindle and caliper and rotor to an earlier brake system. I don’t really suggest doing either of these though.



typicaly speaking most cars with 15inch steel wheel will not fit a 15inch aluminum wheel due to the thickness of the material of the wheel, same can be said of a TON of cars thru the 70s-90s,as well as 16s, obviously there are exceptions out there, but the why it happens is almost never truely an offset issue but a wheel thickness issue as the "step" from the center out to the wheel is considerably thicker than its steel brothers, the depth of the step can sometimes be negated with a spacer
That would certainly be true if talking about a car that has wheel studs instead of lug bolts. Generally on MB, the wheel bolts go with the wheels.

If your “step” is equal to my “stalk”, then maybe we talk the same talk with different words, but the MB steel wheels don’t have the “stalk” that the 1986-1989 r107 wheels have.

One noteworthy exception to what you say above is the 560sl that has front calipers that stick out nearly 1.5” from the mounting surface. This requires the wheels to have a long “stalk” on the back. Think if the mounting surface of the location where a mushroom stalk is cut from the ground. You can add “stalk” to a wheel with spacers, which is hat you’d have to do to make a 7x15 et25 steel wheel from a 1986-1989 w126 fit a 1986-1989 r107, even though the r107 comes with 7x15 et25 alloy wheels.

The lug bolts for steel wheels have ~21mm shank, while the 15” alloy pie pan wheels use 39-40mm shank bolts. The bundt/baroch style wheels use 29-30mm shank bolts. All three lengths are ball seat, but of corse there are aftermarket wheels that use cone seat. I think Lorinser LO are an example, which use cone seat ~40mm shank bolts.


Sent from my iPhone using Tapatalk
 

·
Registered
1988 560SL, 1969 280SL(113)
Joined
·
91 Posts
Discussion Starter #10
If you already own both the wheels, and the 560sl, I suggest you take off one of your front wheels and try for yourself. It will be apparent.

Yes, you can add spacers to your front wheels (reducing the offset, but more importantly making room for the brake caliper), or change out the entire spindle and caliper and rotor to an earlier brake system. I don’t really suggest doing either of these though.





That would certainly be true if talking about a car that has wheel studs instead of lug bolts. Generally on MB, the wheel bolts go with the wheels.

If your “step” is equal to my “stalk”, then maybe we talk the same talk with different words, but the MB steel wheels don’t have the “stalk” that the 1986-1989 r107 wheels have.

One noteworthy exception to what you say above is the 560sl that has front calipers that stick out nearly 1.5” from the mounting surface. This requires the wheels to have a long “stalk” on the back. Think if the mounting surface of the location where a mushroom stalk is cut from the ground. You can add “stalk” to a wheel with spacers, which is hat you’d have to do to make a 7x15 et25 steel wheel from a 1986-1989 w126 fit a 1986-1989 r107, even though the r107 comes with 7x15 et25 alloy wheels.

The lug bolts for steel wheels have ~21mm shank, while the 15” alloy pie pan wheels use 39-40mm shank bolts. The bundt/baroch style wheels use 29-30mm shank bolts. All three lengths are ball seat, but of corse there are aftermarket wheels that use cone seat. I think Lorinser LO are an example, which use cone seat ~40mm shank bolts.


Sent from my iPhone using Tapatalk
Use
If you already own both the wheels, and the 560sl, I suggest you take off one of your front wheels and try for yourself. It will be apparent.

Yes, you can add spacers to your front wheels (reducing the offset, but more importantly making room for the brake caliper), or change out the entire spindle and caliper and rotor to an earlier brake system. I don’t really suggest doing either of these though.





That would certainly be true if talking about a car that has wheel studs instead of lug bolts. Generally on MB, the wheel bolts go with the wheels.

If your “step” is equal to my “stalk”, then maybe we talk the same talk with different words, but the MB steel wheels don’t have the “stalk” that the 1986-1989 r107 wheels have.

One noteworthy exception to what you say above is the 560sl that has front calipers that stick out nearly 1.5” from the mounting surface. This requires the wheels to have a long “stalk” on the back. Think if the mounting surface of the location where a mushroom stalk is cut from the ground. You can add “stalk” to a wheel with spacers, which is hat you’d have to do to make a 7x15 et25 steel wheel from a 1986-1989 w126 fit a 1986-1989 r107, even though the r107 comes with 7x15 et25 alloy wheels.

The lug bolts for steel wheels have ~21mm shank, while the 15” alloy pie pan wheels use 39-40mm shank bolts. The bundt/baroch style wheels use 29-30mm shank bolts. All three lengths are ball seat, but of corse there are aftermarket wheels that use cone seat. I think Lorinser LO are an example, which use cone seat ~40mm shank bolts.


Sent from my iPhone using Tapatalk
Thanks for the information Fonzi and sh0rtlife. As indicated in post #1 above I am out of country until Thanksgiving. I will pick up the wheels in early December. If use on the stock 560SL is a “no go,” use on the 113 is always possible.
 
1 - 10 of 10 Posts
Top