Electronic Brake size ?

[Brewski50]

I have a 38 ft Grand Junction . I'm switching my brake system to a new electronic brake system. I 'm not sure if I have a 10 inch drum or 12 inch size? Am I giving enough info?

[Brewski50]

Can't afford disc brakes right now. How can I tell if I need 6000lb axle or 7000lb axle brakes? My 5th wheel weighs 13,500lbs.

[jmtandem]

Why not look into hydraulic disk brakes as long as you are changing the brakes anyway? Much better stopping power.

[time2roll]

38'? 8 lug wheels right? That will be 12".

6 lug could be either, 5 lug is 10".

http://www.etrailer.com/dept-pg-Trailer_Hubs_and_Drums.aspx