I changed from the factory wheels to the 293 wheels and Michilin Pilots - not cheap, but the best thing I ever did - also bought the kit to fix a flat for peace of mind. The ride is 120 % better than my 2009 Z-4. You wont be disappointed ! Btw - I had these 293 wheels on my 2009 as well - never had any problems with cracking either !
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