M System (17x8) Tire sizing question...

[DueyT]

Especially being non-staggered, I can't see problems with ABS or ASC+T. Rubbing, perhaps at full lock and going over a curb...only 5mm nominal over 235/45-17 many 540 guys run doesn't seem significant. I tbhink your in pretty good shape, M.

Cheers,
Duey

[MTechnik540i]

I say get them. If there is any rubbing, it will only be against the front sway bar at full lock. I'm running 245/45/17 Falken Azenis Sports on 17x8.5 ET15 BBS RCs. They rub slightly against my Dinan front bar at full lock. The Dinan bar is the same 25mm diameter as the bar on your 540i Sport, but it has different geometry, so you may not experience any rubbing.

As far as speedometer error, the tires may actually make your speedo read more accurately. 245/45/17 is closer to the regular E34 stock tire size of 225/60/15. 245/45/17 is a common Mustang tire size, so there are lots of good an inexpensive options out there in that size. I've tried lots of different tire sizes on my car, but for 17" wheels, I'm sticking with 245/45/17.

Drew Z
6-speed Touring

Well, that's some peace of mind...may go that route.