RPM Auto LabLogo Design Contest

these look good, thank you

Thank you so much for your another suggestion.
Please check my new entry revision.
If you need any changes please tell me.
I give you my best effort.
Thank you.

I like this, can we try the RPM fading from red to orange to yellow?

I like the idea including the graphic into the letter, but tire tread may give off tire shop vibes, are there any other related graphics that can be incorporated into the letter R?