I am not sure if this question should be in this forum or general building? But who better to ask than the pros.  Has anyone seen or used a wheel cap on their raised wheel?  Does it help to shave off some time by keeping the air from inside of the wheel while racing? I seen a couple cars that had this done at our derby.
Thanks.
				
			Thanks.
 
	 
 
		 
 
		 
 
		 
 
		 
 
		