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[foxeyes]

Current Setup 07 335i Sport Shocks & Springs

Style 189
Front: 8 x 18 | 225/40/18 | ET 34
Rear: 8.5 x 18 | 255/35/18 | ET 37

M3 Rims
Front: 8.5 x 18 | 225/40/18 | ET 29
Rear: 9.5 x 18 | 255/35/18 | ET 23

The last number is the offset. I'm not quite sure how the offset works or what it means.

Questions - Will I need spacers? What MM? Is it OK to use the same tires / new tires but same measurements? Will I need to roll the fenders? If I go to a Koni and Elibach setup will this help or hurt?

Thanks everyone for your time!

[bmw325i]

They will fit but you will most likely need to roll the rear fenders.

[UPWheels]

Originally Posted by foxeyes

Current Setup 07 335i Sport Shocks & Springs

Style 189
Front: 8 x 18 | 225/40/18 | ET 34
Rear: 8.5 x 18 | 255/35/18 | ET 37

M3 Rims
Front: 8.5 x 18 | 225/40/18 | ET 29
Rear: 9.5 x 18 | 255/35/18 | ET 23

The last number is the offset. I'm not quite sure how the offset works or what it means.

Questions - Will I need spacers? What MM? Is it OK to use the same tires / new tires but same measurements? Will I need to roll the fenders? If I go to a Koni and Elibach setup will this help or hurt?

Thanks everyone for your time!

Spacers will not be required. Spacers are used to lower your offset (push your wheels away from the calipers). MM = millimeters.

Fender rolling will most likely be required if you use those tire sizes.