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

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.

thank you for the response.....:)

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?

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.

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!!

Better safe than sorry!

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?

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.

i found a decent set of Continentals on stock 16" rims and i'm using them. should get me through for a while