I'm looking at replacing my stock 18" wheels for Mazda RX8 18" wheels. Bolt pattern matches - I'll obviously need 235/60R18 tires (already have) and get a hub ring (67.1 to 64.1). My only concern is with wheel loading considering that the RX8 is a much smaller/lighter vehicle, should I be concerned? I haven't been able to find loading information of the Mazda wheels to compare against but I've seen the CR-Vs with 5 spoke wheels so I don't think that it should be an issue. Thoughts?