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  #1  
Old 07-31-2020, 01:51 PM
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tires different sizes question

2005 e320 cdi.....i just realized that i have three 225 55 16 tires and one 225 60 16!
i was going to ride out these tires for the rest of the fall and then spring for a set before winter sets in.
question is do you think any damage would occur if i just pretend like i didn't know?

thanks

g

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Old 07-31-2020, 01:55 PM
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As long as the ABS or traction control isn't pissed off by the size imbalance, let it ride until you buy your new tires. It isn't a significant size difference.
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Old 07-31-2020, 03:57 PM
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thank you for the response.....
Quote:
Originally Posted by Diseasel300 View Post
As long as the ABS or traction control isn't pissed off by the size imbalance, let it ride until you buy your new tires. It isn't a significant size difference.
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Old 07-31-2020, 04:00 PM
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I would make sure the ones on the back are same size.

If different sizes they will overwork the ring and pinion. I had a friend who fried his diff that way. It got hot and lost its lubricity and smoked the bearings. l I guess if you have awd you might want to just buy the one new tire so they all match.

And use the oddball as a spare?
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Old 08-01-2020, 05:00 PM
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Yeah, the 60 series will be about an inch greater diameter, so that's quite a bit of difference. Tire chart showed .9" larger which equates to almost 3" greater circumference. I am surprised the ABS doesn't complain about it.
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Old 08-02-2020, 08:05 PM
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great information guys! i'm trying to run down a correct size set and i found a decent pair of nearly new Continental ContiPro Contact in 225 55 16 today for $75 for both.....
stay safe out there, boys and girls!!
Quote:
Originally Posted by mpolli View Post
Yeah, the 60 series will be about an inch greater diameter, so that's quite a bit of difference. Tire chart showed .9" larger which equates to almost 3" greater circumference. I am surprised the ABS doesn't complain about it.
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Old 08-02-2020, 10:34 PM
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Better safe than sorry!
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  #8  
Old 08-09-2020, 09:07 PM
dtf dtf is offline
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I remember trying to find a spare tire for my kid's 2006 BMW 330xi and the specs said that the tire needed to be with in 1-2% of the rolling diameter of the tire it is replacing.... not an easy task so I would assume that MB has a similar spec?
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Old 08-10-2020, 08:53 AM
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Quote:
Originally Posted by dtf View Post
I remember trying to find a spare tire for my kid's 2006 BMW 330xi and the specs said that the tire needed to be with in 1-2% of the rolling diameter of the tire it is replacing.... not an easy task so[B] I would assume that MB has a similar spec?[/b/]
BMW pulls this shlt with everything like "coding" in new battery or injectors. The W211 couldn't care less. Just don't run different size tires on the rear (as previously mentioned) or on a 4matic.
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Old 08-10-2020, 11:52 AM
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i found a decent set of Continentals on stock 16" rims and i'm using them. should get me through for a while
Quote:
Originally Posted by tjts1 View Post
BMW pulls this shlt with everything like "coding" in new battery or injectors. The W211 couldn't care less. Just don't run different size tires on the rear (as previously mentioned) or on a 4matic.

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