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#1
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CDI Tire Wear Question
When I bought my CDI, the PO had fairly new rear tires and good condition but older front tires. I had snows on for the winter, so when I installed the summer tires I rotated the ones in the rear to the front. The newer tires have 9/32 tread depth and the older ones 6/32. My assumption was that the fronts would wear faster and thus I'd be able to even out the wear.
Out of curiosity I asked the PO about buying two tires instead of four, and he said it was because of the rear tires wearing out faster (I guess he hadn't rotated as much as he might have). I realize that the drive goes to the rear wheels...but it still surprises me that the fronts wouldn't wear out more quickly. Any of you CDI owners notice anything by way of wear patterns?
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#2
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Someone's enjoying the torque
Sixto 83 300SD |
#3
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Just so you know, you're always supposed to have the tires with greater tread on the rear axle.
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'84 190D 2.2 5MT (Red/Palomino) Current car. Love it! '85 190D 2.2 Auto *Cali* (Blue/Blue) *sold* http://badges.fuelly.com/images/sig-us/302601.png http://i959.photobucket.com/albums/a...0/sideview.png |
#4
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Under normal driving, the fronts should usually wear out quicker than the rears.
Either rear suspension components are worn out or as suggested, PO was enjoying the torque in the CDI. Are the rear tires cupped by any chance? |
#5
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True....but I'd also like to even out the wear.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#6
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On my 05 E class wagon I typically will put a new set of tires on the back and move the ones that have worn down approximately 1/2 way to the front. Then when the front ones are worn move the rear forward and repeat. I am of the opinion that tires are cheaper and last longer on the 98 E300.
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Jim |
#7
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W211 eats tires for a living, especially if alignment is bad or ball joint is worn. Doubly more so for the CDI, since it has so much torque.
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#8
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Quote:
I am of the opposite opinion- you want the tires which do the primary braking and steering to be the best you have- so the worse tires go on the rear. You can always speed up slower- but when you need to brake more quickly you want the best tires. |
#9
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Well, that sounds like you have excellent alignment then.
Rear wear out is usually due to negative camber, or incorrect toe. In extreme case, can be affected by a shock like hitting a pothole or curb, in which case can affect the alignment. Furthermore, if your car has airmatic (not sure CDI came with airmatic as standard), putting it in Sport II mode will wear out the tires faster. |
#10
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On rear drive cars I've had, the front and rears generally wore at about the same pace unless I was driving like a jackass.
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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress. |
#11
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The rears wear out faster, and the right rear faster than the left rear.
It's annoying running directional tires, which means I'm throwing out a tire with tread left in the name of replacing in pairs, cause I can't rotate them side-to-side.
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Mark in MA 05 MB E320CDI 402k Granite Grey Metallic 05 MB E320CDI 267k Black 05 MB E320CDI 232k White 05 MB E320CDI 209k Tectite Grey 99 Dodge 2500 Cummins 5sp 148k 62 Jeep CJ-6 120k |
#12
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Looks like I should probably put the good tires back in the rear, rotating left to right.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#13
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The OM 642/722.9 powered family Still going strong 2014 ML350 Bluetec (wife's DD) 2013 E350 Bluetec (my DD) both my kids cars went to junkyard in 2023 2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles) 2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles) 1998 E300DT sold to TimFreeh 1987 300TD sold to vstech |
#14
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I almost always wear out the rear tires faster. Whats the point in having 200+ hp if you're not using them all!
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-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#15
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Quote:
I understand your reasoning, but test after test have shown that the best tread in the rear has provided the best handling and safety. Hope that explanation helps.
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'84 190D 2.2 5MT (Red/Palomino) Current car. Love it! '85 190D 2.2 Auto *Cali* (Blue/Blue) *sold* http://badges.fuelly.com/images/sig-us/302601.png http://i959.photobucket.com/albums/a...0/sideview.png |
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