Does anyone know what I have to do to be able to install a 19*3.5 on my 09 Street glide? The 21*3.5 will fit right up no changes but the 19*3.5 won't.

 

You need to give us more info here, so we can give you a useful answer. Touring models like your SG have been fitted with 16", 17", 18" and 19" front wheels, any of which can be used across the range. I have an 18" SG front wheel in my 1990 Glide, although that did require a few mods to achieve. Which specific 19" wheel would you like to use?

 

Not knowing exactly what wheel. If you are looking at a stock 19 inch enforcer wheel it has a different mount for your brake rotor. You need to swap to the brembro calipers.

 

Or save yourself a lot of time and money by having the rotors turned down from 11.8" to 11.5" and use your existing setup.

 

"09 Street Glide" ... He already has HD Brembos and NO "Turning" of rotors needed ... although when changing wheels, correct rotor mounting style needs to be observed

 

I stand corrected - thank you sir.