Hello,

I just bought set of Tires/Wheels - they are from S500.

I tried to install them but the lug bolts are to long ? and they don't hold the well ...

Do I neet to install centering ring or S500 has same size bore ?

What lug-bolts do I need to make this work ?

Thanks Ndx

 

We need information, photos, details to tell you more, WDY

 

You need hub centric spacers for the right offset. But we need to know the offset of the s500 wheels to figure out the correct spacers. Once you know this then you know what length of bolts to buy.

 

the off set is inside each rim it may say et 35 the et is the offset
the crossfire comes with st 20 in the rear and 30 in the front,,
when you stick a lug bolt through your rim you should have 1/2" sticking through anything longer will hit the e brake cable, anything shorter ,,your wheel will fall off.
if the offset is close it should fit. say 30 for the rear and no more than 40 on the front,,,you will just have either the front or the rear tires sticking out more than the other. if you buy new lug bolts make sure you get ball fit,, unless your wheels are aftermarket then the lug bolts are taper. good luck. jim

 

It is all kind of confusing at times, lol. I found a wheel backspacing calculator on rimsntires that helps a lot. Waiting on my 20 mm spacers and longer bolts to come in so that I can install my new wheels. I tried the front on already and its crazy how much difference a little bit of tire sidewall and an inch of rim makes to ride, lol. I went to a 19 front with 235 35 19 tire. A little more harsh but feels very much one with the road now. Good luck. Plenty of guys here to help you figure it out once you have all of the information.

 

Do the S500 hubs use 12 or 14mm lug bolts? You might need to do what I'm doing. I'm ordering 14mm ball seat bolts with 12mm shafts, since my wheels were designed for a Mercedes with larger lug bolts. The smaller ball seats of the stock 12mm bolts will work with my wheels, but it would likely cause issues at high speed.

 

afaik all the slk and earlier c class used the 12mm ball seat . the other classes especially the s class all used a 14 mm ball seat

 

Hi guys amazing ... It Says ET35 ...so do I need spacers and bolts or both |? what sizes

 

It depends on the width. If it is 8" or 8½" you should not need them for the front but do need for them the rear, I'd say 12-15mm.

 

Would you agree he doesn't necessarily "need" them, but that they will bring the wheels out further to where the stock wheels are and may look better. My ET45 track wheels fit, but I may push them out a bit with spacers for peace of mind.

 

Correct, spacers won't be required on the rear but without them the rear of the car will look strange. The wheel will be nearly an inch further in. This won't really impact drivability but it certainly has adverse effects on aesthetics...

 

I thought the stock rear offset is around 24. If that's the case, a 35 offset would cause the wheel to move inward an extra 1/2", as 25mm equals 1 inch (so 12.5mm is 1/2"). Not trying to get your blood pressure up, I promise.

 

Hi guys.. its all black magic for me ... if you could tell me what to order and what sizes and what bolts to make it work .. so my wife will not get stuck every 5 minutes lol as I got already 3 times lol !

 

This is only the case if the wheels are the same width.
If you go from a 9" et20 to 9" et30, yes the new setup will move the whole wheel in by 10mm.

BUT if the wheels are a different width, that needs to be taken into account
So, let's say we go from a 9" et20 to an 8½" et 30.
-The new wheel is a ½" narrower or about 12mm.
-Half of the width is taken from the outside, half from in.
---If the wheels had the same et, going from the 9 to the 8½ would leave 6mm more room to the fender and 6mm more room to the strut.
-Now lets factor in the new et. a 15mm difference...
-Outside: -6mm - 15mm = -21...21mm more room to the fender
-Inside: -6mm + 15mm = 9mm less room to the strut.

So to get this hypothetical new wheel to sit under the fender like the original, we would need a 21mm spacer...

Does that make sence?

How wide are the new wheels?
Do you care much about the 'stance'?
I cant comment on the bolts. Different wheels have different pad thicknesses. All I can say for certain is that XFs use 12x1.5 bolts. The easiest way to figure out length is to pull on of the original wheels off and see how much of the lug sticks out of the back. Measure it or count the threads. Then put the same bolt on the new wheel and compare. If it is too long, by how much? If there's an additional 5mm, then the new bolts need to be 5mm. shorter.

 

The new rear wheels that I have are 8.5"x19 with +35 and required a 20 mm spacer as the difference between it and stock was a difference of 19mm. The setup with my ADR wheel also required a 45mm shank length bolt to keep 1/2" to 3/4" of threads in the backplate. First, you need to get a bolt and put it through the wheel to see how much shank sticks out the back. Next, take the length recorded and figure out the difference between it and the 1/2" to 3/4" needed. If the diff is 10 mm too much then measure the stock bolt shank and subtract 10mm. If you require a spacer, figure out the spacer and then add that width to your overall needed bolt length. Do a Google search for "wheel backspace calculator". The one from "rimsntires" is a good one. Put in your stock rim specs and tire specs and then the new rim and tire specs and it will do the rest. Also, it will show the mm of backspacing...take the total mm width of the rim and subtract the mm of backspace. Do it on both and see what the diff is from stock to new rim. There is the magic spacer number. I hope this helps. I tried to explain it for you. Get me all of your measurements and I will check it for you if needed. The bolt length is most important though. Too long and you hit parking brake and backplate...too little and you can lose a wheel and no one wants that for anyone, lol. Good luck

 

Hey Guys

Big thank you

8Jx17H2
ET35
255 45 17

So I guess width is 8

If possible I would like to avoid buying spacers if possible as looks is not big deal.

So can I get away with bolts only?

Thank u

 

17" rim will look tiny on the back of a xfire. that has to be an older yr sclass wheel. check the m/b forum to see if they are 12mm or 14mm shanks

 

What is shank?
Sorry

 

the threaded portion of the lugbolt

 

Hey gave me bag of lug bolts they are shorter but they are ticker...
I can measure them... Btw those wheels are noname not OEM Benz.

So if i will find shorter lugnuts? Will that work? Or do I need spacers?

Thx