Wasn't happy with the Tischer compact spare solution for my 335xi (http://www.trademotion.com/partlocat...catalogid=4462) as their E60 setup has a 135/80/17 tire, which has a 25.5" diameter, versus the 25" on all E90 tires. That concerned me with the AWD electronics. While the LeatherZ part (http://leatherz.com/Merchant5/mercha...etyConvenience) has the right size tire (125/80/17), it's narrow wheel (meant for a Z3) won't fit a 335 without a spacer. I bought the Bavarian Autosport E90 spare kit (http://www.bavauto.com/shop.asp), which fits perfectly and comes with an excellent tool kit (http://www.realoem.com/bmw/showparts...=71&fg=95&hl=3) which has the best scissor jack I've ever used (fits firmly in the chassis block and has a thumbwheel and an actual ratchet mechanism) as well as a precalibrated torque wrench (96 lb/ft, which is OK for the steel spare). Looking forward to getting decent tires- will be posting my barely used Turanza RFTs for sale soon!