Tire Sizing
Thanks in advance.
w204 C63 AMG 507
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I sent you a DM, btw.
Also OP, why do you want a square setup? So you can rotate them or something?
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I am going to order this week and have burned through many 255's and want to step up to 265 or 275... not sure which.
Last edited by Dogtag114; Oct 28, 2019 at 02:44 PM.




I'm on E400 AMG 18's with 8.5" fronts and 9" rears with similar offsets to factory C63 18's 8"+9".
The 255 factory size is to give the manufacturer plenty of clearance around the tyre.
My 275's fit no problem on rear and have never heard any rubbing even with 5 adults and luggage.
I don't fang mine around corners that often but do occasionally the odd traffic light run so 275 Michelin PS4's definitely limit wheel spin with traction in sport mode.
Also here in OZ the 245/275 Michelins are actually cheaper than the 235/255 sizes.
Last edited by Cwagon; Oct 28, 2019 at 08:59 PM.
Also, I'm planning to run 255 / 275 combo on my stock 19" wheels (c400). I read that I will need a 12mm spacers up front. Do I need any spacer in the rear? I would like to push my rear wheels out a little so it sits flush and reduce the gap. I won't be lowering the car for now.
I'm going with the michellin route as well. I don't want my tires to wear faster and I will not going to track this car.




