kongR

will 235/45/18R be ok for winter tires on standard 18inch amg wheels for a 2012 c63?

GBlansten

hi i was wondering if anyone knows if its ok to have 235/45/18 winter tires on 2012 c63 18inch wheels.

thanks in advance

https://mbworld.org/forums/c63-amg-w...es-winter.html

https://mbworld.org/forums/c63-amg-w...uld-great.html

sorry but it didnt say if 234/ 45 / 18 is ok, coz the tires a thicker in those 45s

https://mbworld.org/forums/4850514-post10.html

haha i was wondering if he was selling it coz 45 is too tall =p

Canada/New England crew can probably chime in here.

I was under the impression that the rule of thumb was to stay within +/- 3% of OEM tire diameter otherwise it throws the speedo way off and could cause other issues. A 45 series tires is 3.7% and almost an inch difference in the front and 5,3% different in the rear versus OEM.

Personally, I would not use a 45 series tire unless it was very narrow and maintained the standard height. For example, a 225/40 tire is the same diameter as a 255/35 tire. Therefore, running a 225/40 rear is perfectly fine.

We are running 225/45/18's Michelins X-Ice all around and it works fine. They're a bit taller than the stock tires, but there are no clearance issues.

235/45/18's are even taller so it might be getting close.

_AMG_

They higher aspect ratio will throw off the speedometer slightly.
Why not just stick with the OEM tire size?