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Old 09-08-2020, 05:59 PM
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W124 V8 big brake upgrade rubbing issue

Hey guys, just thought I would share because I didnít find anyone else touch on this issue when I decided to do the brake upgrade.
My car, a 89 260e had the stock single piston front calipers, but my local yard had a V8 car so I decided I might as well snag the front calipers off it.
Doing some reading I found that lower ball joint will have a clearance issue, but someone said you can trim the shield and I did and this solved that issue.
Rotors spun smooth, it was a nice easy bolt on upgrade.
The problem I ran in to was when I went put my wheels back on. My car has the stock 15Ē wheels and when I would torque the wheels the wheel was unmovable.
I loosened the lugs until it started to spin, and rotated the wheel so see where is was getting hung up at.
Looks like the face of the caliper hits the inside of the wheel.
Bummer for me Because if I would have know of this issue I would have had some 5-10mm spacers to help clear it so my daily driver would still be driveable. My plan is to get monoblocks wheels so Iím not to worried about it right now, but just thought I would share this finding for the next guy or gal

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Old 09-08-2020, 08:36 PM
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You have 15 hole 15" wheels? Get 8 hole 15" wheels from a 93+ w124. They're designed to clear the 4 piston calipers. 16" 6 hole w203 wheels with 205/55R16 tires are also a perfect fit.

One of the first things I did to my 87 300D was to swap 4 piston brakes from a 93+ w124 (6cyl cars also had them) with 8 hole wheels.
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Old 09-09-2020, 12:41 AM
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Quote:
Originally Posted by tjts1 View Post
You have 15 hole 15" wheels? Get 8 hole 15" wheels from a 93+ w124. They're designed to clear the 4 piston calipers. 16" 6 hole w203 wheels with 205/55R16 tires are also a perfect fit.

One of the first things I did to my 87 300D was to swap 4 piston brakes from a 93+ w124 (6cyl cars also had them) with 8 hole wheels.

I do have the 15 hole wheels. That must be my issue.
Thank you for that, I just found a guy with a set with brand new tires for $260 locally


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Old 09-09-2020, 02:59 AM
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Originally Posted by Zacharyrip View Post
I do have the 15 hole wheels. That must be my issue.
Thank you for that, I just found a guy with a set with brand new tires for $260 locally


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Check the part number on the back, make sure it starts with 124. W126 also came with 8 hole but offset was different.
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Old 09-09-2020, 03:01 AM
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Originally Posted by tjts1 View Post
Check the part number on the back, make sure it starts with 124. W126 also came with 8 hole but offset was different.

Ahh thanks for that, I would have been bummed if I drove all the way and they where wrong


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Old 09-11-2020, 11:24 PM
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My 93 300te had 15 hole wheels, yet the casting in that area gave room for the fixed 4-piston calipers. When you look at the inside spokes, it will be readily apparent whether they clear the 294/295mm brakes
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Old 09-12-2020, 10:40 AM
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Originally Posted by bigpanda16 View Post
My 93 300te had 15 hole wheels, yet the casting in that area gave room for the fixed 4-piston calipers. When you look at the inside spokes, it will be readily apparent whether they clear the 294/295mm brakes
93 was the first year for 4 piston brakes on most 6cyl models and the 15 hole wheels that came on your 93 have a different offset from earlier wheels in order to accommodate those brakes. That's why it's so important to read the PN stamped on the inside of the wheels.
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Old 09-21-2020, 02:58 AM
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Get the 17" AMG monoblocks and be done with it.

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