205/65R15 Too Big on a 123? - Mercedes-Benz Forum
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post #1 of 14 (permalink) Old 02-22-2016, 07:19 AM Thread Starter
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205/65R15 Too Big on a 123?

Greetings.

My new CD has 14" Bundts and the tires are nearing the end of the road, literally. I'd like to upgrade the rims when I do the tires. I found a set of w126 rims with like new tires and I am considering the swap.

I have seen photos of 123's riding on 126 "bottlecap" rims which I assume are all 15 inch. They look pretty decent on the car. Not AMGs mind you, but nowhere near the cost either.

Does anyone have experience with this modification? Is a 205/65R15 too large a tire for a 123??

Many thanks for any and all input.
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post #2 of 14 (permalink) Old 02-22-2016, 02:57 PM
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not al w126 have a proper offset, so that is something important to check.
ive tried 15" et35 and they have not worked on any of my w123s, and with a spacer to get ET30 was not enought either.


some w126s can be found with ET25 "bottlecap" and some versions have ET35 or something alike.

195/65r15 is what i run on a couple of w123s, 195/70r15 at the rear on one.

195/70r15 and 205/65r15 might be a tiny tad to big, i would go for 205/60r15 if that is the case, used that a lot to, and worked good.

wide-wise it isnt a problem (use 225 on another lowered w123)


thats a picture of the car with 195/65r15 anyhow, a tad rear-heavy, but gives an idea of size atleast

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post #3 of 14 (permalink) Old 02-22-2016, 07:06 PM
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Personal preference... I would not do it <--but, that's me. Whatever Rocks Your Boat...
I have done 'Mods' to my cars (Sanden A/C, EGR Delete etc.) so I'm not a purist... I just like the stock look.

'84 300D 176k
'85 300TD 196k
'96 F-350 136k (7.3L Dually)
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post #4 of 14 (permalink) Old 02-22-2016, 07:14 PM Thread Starter
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I'd like to fill the gaps a bit. But, I don't want to drop a fortune on both rims and tires. The size referenced in the thread title is from a set on CList with fairly new Michelins.

But, it sounds like they're too large. I don't wand the car to look stupid. My preference would be for the older style wheels. Those with chrome and matching paint wheel covers, but with wider tires. But, those are very rare and I'd need rims, cover, and tires. And, paint work.

I'll keep looking.

Last edited by oldmako; 02-22-2016 at 07:22 PM.
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post #5 of 14 (permalink) Old 02-22-2016, 08:52 PM
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Donkey was tall, so 205/65R15 didn't seem too big on her. In fact, I'm looking at installing 205/70R15 on my new 300D, which is also tall.



Of course, if you're a low-lider...


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post #6 of 14 (permalink) Old 02-23-2016, 05:56 AM
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Planecrazy, that looks awsome, as a car is supposed to look!

i think the car looks ridiculous with the smal 14" people put on it, its pretty darn sweet to be able to drive around where normal cars wont go to.


also, another benefit with larger tires, you get a tad "better" gearing, even thou its very little, its absolutetly noticeable compared to the regular 14" rpm wise. id go for the larger set anyday of the week.

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post #7 of 14 (permalink) Old 02-23-2016, 06:21 AM
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Thanks, but the 14s can look good. Here's my new soon-to-be-300D with 185SR14.



185SR14 was the standard specification tyres in South Africa for the diesels, and since 1980 for all except the 200. Nice, bouncy rubber. Even if I inflate the tyres to their highest pressure ("Warm tyres or continuous high speed driving"), they're still remarkably comfy. Which is why I prefer bigger tyres and higher ground clearance.


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post #8 of 14 (permalink) Old 02-23-2016, 07:06 AM Thread Starter
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PlaneCrazy,

Well, your sedan looks great. Thanks for your pics and opinions.

I would think the car rides better on the larger tires, have you found that to be true? And, will I need to obtain new wheel lugs for those bottlecaps?

Lastly, are you a pilot or just an aviation junkie? Or both?
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post #9 of 14 (permalink) Old 02-23-2016, 04:02 PM
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Originally Posted by swampmonkey View Post
not al w126 have a proper offset, so that is something important to check.
ive tried 15" et35 and they have not worked on any of my w123s, and with a spacer to get ET30 was not enought either.
...
I have used et35 rims on my w123 with no spacers- there is a small trick involved and you must get a front end alignment but it's quite simple and allows w123 chassis to accept up to et35.
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post #10 of 14 (permalink) Old 02-24-2016, 03:21 AM Thread Starter
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What's the "trick"?
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