BMW M3 Forum (E90 E92) - View Single Post

Parkanzky · 09-08-2012, 06:55 AM

That's for two valve stems. They're 180 degrees from each other so that you can flush the tire (i.e. with Nitrogen). You'll see it sometimes on racing rims. Kosei and a lot of other Japanese manufacturers do it.

09-08-2012, 06:55 AM	#8
Parkanzky Private Drives: '10 SGM M3 Join Date: Aug 2012 Location: Grand Rapids, MI Posts: 75 iTrader: (0)	That's for two valve stems. They're 180 degrees from each other so that you can flush the tire (i.e. with Nitrogen). You'll see it sometimes on racing rims. Kosei and a lot of other Japanese manufacturers do it.