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R107 300SL 1986 in Willow Green with Mushroom Sports Check Interior. 36,000 miles, 1 owner from new
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Discussion Starter #1
I am looking to fit the 16x8 ET34 15 hole alloys from the R129 on my 1986 300SL with 225/55R16 tyres. I like the slightly enhanced "stock" look that these provide.

From reading these forums, I believe I will need spacers on the front to avoid rubbing, and on the rear to balance the look of the car. I have found a set of System 2 Hubcentric spacers from Eibach and I think the 15mm ones should do the job nicely while keeping everything running nice and true.

Has anyone got experience of this combination and with that offset/spacer combination, which I believe will avoid any suspension component rubbing, will ther be adequate room for the front wheels to turn properly to full lock in both directions?

Thanks for your help.


Kevan
 

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Et19 should work just fine with 225/50/16 tires.

Since you have a gen2 you should be able to do the spacers.

I don't know that 15mm hub-repeating spacers will fit over the existing ~10mm deep hubs. I think 20mm might be more likely to fit and et14 might be a little better stance and closer to the desirable 8x16 et11.


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R107 300SL 1986 in Willow Green with Mushroom Sports Check Interior. 36,000 miles, 1 owner from new
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Discussion Starter #3
Thanks for the reply.

I didn't want the stance to come up too aggressive as I am looking for an understated result hence why I was going for what looked like the minimum thickness spacer.

You can go thinner still but they are definitely not hub centric and I think that is too risky. There is a red 560 on the forum with these rims and what he describes as half inch spacers and that looks about right to my eye. 15mm is close enough to that I would say...

Have you seen a finished car done at ET11 with a 16x8 rim? Would be interested to see a picture before committing to the cost of the project. Will the 225/55 tyre also work as again, I don't want the low profile look on this car?

Thanks again




Kevan
 

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I think you are speaking of DenDownunder's car. He never clarified if his 1/2" spacers are hi centric/hub-repeating spacers or not. I doubt that 1/2" could possibly be hub-repeating spacers. There must be an amount where the spacer is both thicker than the bore and thinner than the bore in order to hold the new hub on the spacer. I called a spacer company and they said that 20mm spacers have about 17mm of 66.5mm inner diameter before the bore decreases in order to hold on the part that has a 66.5mm outer diameter. So if you reduce this by 5mm for your 15mm spacers, you are cutting it really close to have enough spaced inside the spacer for your existing hub and the grease cap too. That is why tuner shop makes spacers that include an integrated grease cap.

Check out the thread entitled something like "spacers for tapered hubs". I know you don't have a gen1 tapered hub, but I think the topic describes the situation.

In short, go for 20mm spacers and ~60mm shaft lug bolts (probably the longest you will be able to find). 12x1.5 57-62mm shaft ball seat lug bolts (I believe) is what you will need.


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R107 300SL 1986 in Willow Green with Mushroom Sports Check Interior. 36,000 miles, 1 owner from new
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Discussion Starter #6
Agree that DenDownunder's are probably not hub centric. I get the point about the amount of metal that must remain in a hub centric spacer too. I will go and get the tech drawings on both the 15mm and 20mm spacers from Eibach and post them here so it is clear as to what fits properly.

Assuming use of the 20mm spacers, giving a result of ET14, is there room for a 225/55/16 tyre as this is the closest to the stock diameter of a 205/65/15 adding just 6mm to the overall diameter (654mm compared to 648mm) but then there is the extra 20mm of width to consider at full lock...
 

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225/50/16 is recommended by both Amg and TUV from what I have seen. I see that there are a few Australians that fit 225/55/16 on 8x16 et11 though. I know that when I tried the 8x16 et34 wheels with 225/55/16 tires and only 5mm spacers I couldn't even turn the steering wheel.

Tuv recommends 225/50/16 on 8x16 et21 bbs rs133.


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Discussion Starter #8
225/50/16 is recommended by both Amg and TUV from what I have seen. I see that there are a few Australians that fit 225/55/16 on 8x16 et11 though. I know that when I tried the 8x16 et34 wheels with 225/55/16 tires and only 5mm spacers I couldn't even turn the steering wheel.

Tuv recommends 225/50/16 on 8x16 et21 bbs rs133.


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What exactly was stopping you from turning the wheels? Were the tyres fouling on the suspension components with only 5mm spacers?
 

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What exactly was stopping you from turning the wheels? Were the tyres fouling on the suspension components with only 5mm spacers?
I Never inspected them other than turning the wheels to full lock when up in the air. They would not bolt on without spacers. They were able to bolt on with 5mm spacers but the inner wheel weight rubbed the tierod boot with every turn. It full lock the inner weight would hit the control arm, and probably get ripped off in a real world scenario.

I think that the largest problem was trying to run 225/55/16 tires at et29. The tires were too far inward. Other members say they have no problem with 225/55/16 at et11, but it must be really tight. I think that the tires must have been rubbing the inner fender at the et29. It was so bad on my car that I could not turn the wheels enough to even do a multi-point turn to do the 90 degree turn to get out of my driveway to even take a good side view picture of the car.

I am pretty sure that this was just a situation of too large of a tire. Sing too far inward. Use 225/50/16 and shoot for an offset between 11 and 22 and you should be fine. The closer to 11 you go with 225/50/16, the better your car will look and handle.
 

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R107 300SL 1986 in Willow Green with Mushroom Sports Check Interior. 36,000 miles, 1 owner from new
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Discussion Starter #10
Well, we took a little time and care to get here, but I think I like your advice and will go with 225/50R16 tyres and the 20mm hubcentric spacers from Eibach with 60mm extended lug bolts. This will run at ET14 which I hope will both run/handle properly and look brilliant...

Fonzi, thanks for your insight. I will post pics here when I get the work done and show all the detail of the changes made.
 
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