Here my design alternative. I used a nut in reference to the mechanics as well give it a masculine character to the logo. If you have comments, please let me know.
#2: We like the treatment of the word mark & the nut icon, however we're interested in seeing other arrangements in an effort to make each element seem more cohesive as a logo. thanks
#4 & #6: again, like the type-treatment for the most part. Some of the streak elements work, some do not - tone them down some and perhaps that will help. The nut icon element seems a little too large, also interested in seeing some other icon ideas.
RE: #21, #22, #30 these illustrations are really nice, however they don't seem cohesive as a logo
RE: #29 We would like to see the Lugnut element from your original submission illustrated to the level of quality of this wheel as well as similar size and placement to the wordmark.