winter tires different front/back width

[minnoce944]

i have the bridgestone blizzak LM-25's. Got a flat the other day and found out my tire is not in stock anywhere and cannot be ordered since bridgestone stops manf them for the season. Even tried tirerack/ntb/sears/just tires, firestone-bridgestone stores, etc.

Currently i have the 225/40/18, the only close tire i can find is a lm-25 235/40/18. I was thinking i can buy 2 and use them for the back and keep the 225/40/18 for the front. Any problems with doing this? Is there a better recommendation/suggestion? Is it better to just buy a new set of 5 same size (spare this time) and cut my losses?

I noticed my default stock summer tires are 225/40/18 front and 255/35/18 rear. This would make me think its ok to run dif widths but am not sure.

Any help appreciated, i have a loaner from the dealer right now but i miss my car

Relevant car info:
BMW 335XI sports package with 18in rims

[dannyb]

i dont see a problem with running wider tires in the back

[isherdholi]

The reason your rear tyres are wider, is because your rear wheels are wider. Your stock 18-inch wheels are most probably 18x8 at the front and 18x8.5 at the back.

The tyre widths you have are correct for the wheel width. I would not recommend putting different width tyres than the ones that you currently have, i.e. make sure your fronts are always 225, and make sure your rears are always 255.