[R12ax7]

A little update from my post back in 2013. I actually ended up swapping the summer/winter tires between the 189s and 193s and turned in my e90 with the 189s switching the 193s to winter use - which ended up being a bad idea, since the tire place ruined a couple of the tires in the process.

Anyway, I ran the 193s with the incorrect aspect ratio for three winters with no real issues. Of course the speedo was about 5 mph off and technically the odometer has some phantom miles on it, but it worked for a couple months of the year. The only issue i ever had was that the traction control calibration was a bit off and i did have some ground clearance issues, but i was on Dinan springs and i think i would have been fine if i didnt drop it.

Now I am in a 2016 340 with the Track Handling Package, which has brought a new problem. It turns out the front Msport calipers just barely scrape the inside of the 193s. I mean we are talking 1, maybe 2 millimeters. I may just file down the edge of the calipers a bit or i have a friend with a lathe who said he could probably make a small channel in the wheel, but just a PSA for those with the Msport brakes. Sorry for the terrible cell phone pics.